All About Java Mail

JavaMail FAQ From jGuru Generated Sep 13, 2005 2:11:33 PM

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How do I send email from a servlet?Location: http://www.jguru.com/faq/view.jsp?EID=154 Created: Sep 3, 1999 Modified: 2000-07-25 12:18:54.284Author: Alex Chaffee (http://www.jguru.com/guru/viewbio.jsp?EID=3)

From: James Cooper ([email protected])

GSP and GnuJSP both come with SMTP classes that make sending email very simple. if you are writing your own servlet you could grab one of the many SMTP implementations from www.gamelan.com (search for SMTP and java). All the ones I've seen are pretty much the same -- open a socket on port 25 and drop the mail off. so you have to have a mail server running that will accept mail from the machine JServ is running on.

See also the JavaMail FAQ for a good list of Java mail resources, including SMTP and POP classes.

Comments and alternative answers

If you want to use the JavaMail API, get it and create... Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7), Jul 24, 2000If you want to use the JavaMail API, get it and create a program similar to the Hello World program.

See also Author: Alex Chaffee (http://www.jguru.com/guru/viewbio.jsp?EID=3), Sep 20, 2001This thread: Re: Automatically send and get mails using servlet...

Some examples Author: Chris Lack (http://www.jguru.com/guru/viewbio.jsp?EID=326717), Sep 21, 2001I've written an "EMailClient" class for sending e-mails for my guestbook entries. I've also done an "InBox" servlet class that lists e-mails in your pop mail in-box so that you can delete or bounce them before downloading to your PC. Have a look at the code, it might help -

http://www.chris.lack.org and choose the java option on the professional menu.

By the way you'll need JavaMail and Java Activation foundation from Sun if you've not already downloaded them. You don't need your own mail server.

http://www.jguru.com/forums/view.jsp?EID=500292

http://www.jguru.com/jguru/faq/view.jsp?EID=12858



http://www.jguru.com/faq/JavaMail

mailto:[email protected]

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How can I send email from a JSP page?Location: http://www.jguru.com/faq/view.jsp?EID=1163 Created: Nov 19, 1999 Modified: 2002-03-26 06:47:10.343Author: Govind Seshadri (http://www.jguru.com/guru/viewbio.jsp?EID=14)

The JavaMAIL API is the standard mechanism for sending email. See the JavaMail FAQ for how to use it. You can place j2ee.jar (or mail.jar and activation.jar) under web-inf/lib folder in tomcat3.2.4.

You can send email from any JSP engine (like the JSWDK reference implementation) that supports the Sun specific sun.net.smtp package.

(Statutory warning: Using internal Sun-specific packages is not an approach jGuru recommends, as it will prevent your JSP pages from being truly portable.)

The following scriptlet makes use of the SmtpClient class to send an email from within a JSP page.

<%@ page import="sun.net.smtp.SmtpClient, java.io.*" %><% String from="[email protected]"; String to="[email protected], [email protected]"; try{ SmtpClient client = new SmtpClient("mail.xxxxx.xxx"); client.from(from); client.to(to); PrintStream message = client.startMessage(); message.println("To: " + to); message.println("Subject: Sending email from JSP!"); message.println("This was sent from a JSP page!"); message.println(); message.println("Cool beans! :-)"); message.println(); message.println(); client.closeServer(); } catch (IOException e){ System.out.println("ERROR SENDING EMAIL:"+e); }%>Comments and alternative answers

error in the scriptlet Author: Fabio Mercuri (http://www.jguru.com/guru/viewbio.jsp?EID=1049210), Jan 22, 2003after the line PrintStream message = client.startMessage(); the scriptlet sets in the message stream the following attribute: message.println("To: " + to); in this way the received email will not display the from address! The correct lines are: PrintStream message = client.startMessage(); message.println("From: " + from); message.println("To: " + to); As regards



Re: error in the scriptlet Author: john turner (http://www.jguru.com/guru/viewbio.jsp?EID=1122937), Oct 21, 2003I can never get the subject line to be included in the email when using the SmtpClient class. Don't think there's anything wrong with me code, it works perfectly well apart from this. Has anyone else had this problem? String from="[email protected]";String to = (String)session.getAttribute("enqEmail");String subject="Rate Response"; try{ SmtpClient client = new SmtpClient("Server"); client.from(from); client.to(to); PrintStream message = client.startMessage(); message.println("From: " + from); message.println("To: " + to); message.println("Subject: " + subject);

Re[2]: error in the scriptlet Author: Tushar Kapila (http://www.jguru.com/guru/viewbio.jsp?EID=1059392), Jan 22, 2004the subject should come before the To, thus: message.println("From: " + from); message.println("Subject: " + subject); message.println("To: " + to);

Take a look at the jakarta taglibs Author: Thiadmer Sikkema (http://www.jguru.com/guru/viewbio.jsp?EID=1079811), Jan 21, 2004Include the taglib declaration in your web.xml and use the following code in your JSP:<%@ taglib uri="http://jakarta.apache.org/taglibs/mailer-1.1" prefix="mt" %><mt:mail server="home.net" to="[email protected]"from="[email protected]" subject="mail taglib"> <mt:message>[body of message]</mt:message> <mt:send/></mt:mail>

Jakarta Project: Mailer Tag library docs

What do I need to acquire in order to get started with JavaMail?Location: http://www.jguru.com/faq/view.jsp?EID=4139 Created: Jan 5, 2000 Modified: 2000-09-10 09:04:15.57Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

The reference JavaMail implementation is available from Sun from http://java.sun.com/products/javamail/. You also need the JavaBeans Activation Framework extension from http://java.sun.com/beans/glasgow/jaf.html. If you intend to use JavaMail to read mail, you also need a POP3 provider and might wish to pick up the provider that Sun offers (also available from http://java.sun.com/products/javamail/).

http://java.sun.com/products/javamail/

http://java.sun.com/beans/glasgow/jaf.html

http://java.sun.com/products/javamail/



http://jakarta.apache.org/taglibs/doc/mailer-doc/mailer-1.1/index.html

The JavaMail libraries works with Java 1.1.x or greater.

Read the LICENSE.txt file that comes with the tools for complete redistribution information. Basically you are free to redistribute the unmodified packages.

What is the basic SMTP protocol for sending mail?Location: http://www.jguru.com/faq/view.jsp?EID=4344 Created: Jan 8, 2000 Modified: 2002-03-30 19:06:02.876Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

RFC 2821 (http://www.faqs.org/rfcs/rfc2821.html) defines the SMTP protocol. To send a message you would normally open up port 25 on your mail server and send the following information:

HELO sending hostMAIL FROM: sender emailRCPT TO: recipient emailDATA... the email message...... any number of lines ....QUIT

Between the DATA line and the . (period) line is the message. The period is alone on the line following the end of the message.


A much more cogent place to start learning more about... Author: John Mitchell (http://www.jguru.com/guru/viewbio.jsp?EID=4), Jan 27, 2000A much more cogent place to start learning more about SMTP than the RFCs is at http://cr.yp.to/smtp.html.

How can I send mail when I don't have the JavaMail libraries installed?Location: http://www.jguru.com/faq/view.jsp?EID=5062 Created: Jan 15, 2000 Modified: 2000-07-25 12:50:33.754Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

Assuming you have access to an SMTP server that will accept your request, you can either open up a socket connection to port 25 and send the raw SMTP commands, or use the non-standard sun.net.smtp.SmtpClient class that is provided with Sun's development environments.

Keep in mind that both the JavaMail library and JavaBeans Activation Framework are in javax.* packages and thus downloadable to an applet.

And for an application, you can always just install them yourself.

In the case of an untrusted applet, the web server and SMTP server must be the same machine.



http://cr.yp.to/smtp.html

http://www.faqs.org/rfcs/rfc2821.html




SMTP raw commands Author: Sir Peter Brightman (http://www.jguru.com/guru/viewbio.jsp?EID=786643), Mar 7, 2002take a look at the socket-test program from castalia.com, it comes with SMTP examples:

How to simulate an SMTP converstaion... Refer to RFC 821 (ftp://ds.internic.net/rfc/rfc821.txt)

The service port for the SMTP protocol is 25.

NOTE: Make sure you are appending a CRLF to the end of each line sent.

Instructions------------

Set the Connect to IP address to an SMTP server such as mail.compuserve.com.

Set the port to 25.

Select Actions|Connect to a Server.

Below is the transmission log from a typical session. For your testing, type in all lines that start with the word Sent:

Connected to IP = 149.174.183.74 on server port #25 From socket(128)--> 220-csi.com Microsoft SMTP MAIL ready at Sat, 19 Jul 1997 21:45:01 -0400 220 ESMTP spoken here

Sent: HELO CASTALIA.COM

From socket(128)--> 250 csi.com Hello [204.179.128.110]

Sent: VRFY smith

From socket(128)--> 252 Cannot VRFY user, but will take message for smith

Sent: MAIL FROM:<[email protected]>

From socket(128)--> 250 [email protected] OK

Sent: RCPT TO:<[email protected]>

From socket(128)--> 250 [email protected]

Sent: DATA

From socket(128)--> 354 Start mail input; end with <CRLF>.<CRLF>

Sent: Test message via compuserve...

Sent: SMTP is easy...

Sent: .

From socket(128)--> 250 04f831546011477NIH2WAAE Queued mail for delivery

Sent: QUIT

From socket(128)--> 221 csi.com Service closing transmission channel

Lost connection on socket(128)

Note:

For CRLFCR stands for carriage returnLF stands for linefreed

Use '\r' for carriage return and '\n' for line feed.

Is there a mailing list for discussion of the JavaMail API?Location: http://www.jguru.com/faq/view.jsp?EID=9967 Created: Jan 29, 2000 Modified: 2000-07-25 12:50:54.46Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

Sun manages the JAVAMAIL-INTEREST list. You can signup at http://archives.java.sun.com/archives/javamail-interest.html.

I am trying to send a mail through JavaMail but I am getting an exception: Could not connect to SMTP host 25. How to give this SMTP host?Location: http://www.jguru.com/faq/view.jsp?EID=12854 Created: Feb 9, 2000 Modified: 2000-07-25 12:51:34.544Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by chandu sekhar (http://www.jguru.com/guru/viewbio.jsp?EID=12358

If you get an exception like:

http://www.jguru.com/guru/viewfaqs.jsp?EID=12358



http://archives.java.sun.com/archives/javamail-interest.html



Exception in thread "main" javax.mail.MessagingException: Could not connect to SMTP host: www.myhost.com, port: 25;

it means there is no mail (SMTP) server software running on the designated host. You'll need to find an appropriate host to use as your transport.Comments and alternative answers

Not totally true .. Author: Serge Sozonoff (http://www.jguru.com/guru/viewbio.jsp?EID=1019873), Dec 19, 2002This is not totally true. I have seen this Exception several times when in fact there is an SMTP server on the other end, only it is not immediately returning a 220 response. This can often be because your server is lacking a reverse DNS entry or maybe you have been blacklisted and the remote SMTP host is just creating a black hole. Other thoughts welcome.... Serge

Re: Not totally true .. Author: Peter Feldman (http://www.jguru.com/guru/viewbio.jsp?EID=1060651), Feb 25, 2003I find that when there is no server running I get javax.mail.SendFailedException: Sending failed; nested exception is: class javax.mail.MessagingException: Unknown SMTP host: <servername> nested exception is: java.net.UnknownHostException: <servername>

I get the following when the session cannot be established to the existing server. javax.mail.SendFailedException: Sending failed; nested exception is: class javax.mail.MessagingException: Could not connect to SMTP host: <servername>, port: 25; nested exception is: java.net.ConnectException: Connection refused: connect

What is the proverbial "Hello, World" program for JavaMail?Location: http://www.jguru.com/faq/view.jsp?EID=12858 Created: Feb 9, 2000 Modified: 2001-08-19 06:57:29.633Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

The following program will send a mail message. It requires three command line arguments:

• SMTP Server • From Email Address • To Email Address

An example start follows:

java MailExample smtp.mailserver [email protected] [email protected]



Source:

import java.util.Properties;import javax.mail.*;import javax.mail.internet.*;

public class MailExample { public static void main (String args[]) throws Exception { String host = args[0]; String from = args[1]; String to = args[2];

// Get system properties Properties props = System.getProperties();

// Setup mail server props.put("mail.smtp.host", host);

// Get session Session session = Session.getInstance(props, null);

// Define message MimeMessage message = new MimeMessage(session); message.setFrom(new InternetAddress(from)); message.addRecipient(Message.RecipientType.TO, new InternetAddress(to)); message.setSubject("Hello JavaMail"); message.setText("Welcome to JavaMail");

// Send message Transport.send(message); }}

How do I send mail using the non-standard sun.net.smtp.SmtpClient class?Location: http://www.jguru.com/faq/view.jsp?EID=16021 Created: Feb 19, 2000 Modified: 2000-07-25 12:53:36.191Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

Sun's Java runtime environments (as well as the ones included with Netscape Communicator and Internet Explorer) include the SmtpClient class. As part of the sun.net package, it is not a standard Java library. However, since it is available, you may wish to use it to send mail, without going for the full fledged JavaMail installation.

The following program demonstrates how to send mail with the class:

import sun.net.smtp.SmtpClient;import java.io.PrintStream;

public class SmtpClientExample { public static void main (String args[]) throws Exception { String host = args[0];



String from = args[1]; String to = args[2];

SmtpClient smtp = new SmtpClient(host); smtp.from(from); smtp.to(to);

PrintStream msg = smtp.startMessage(); msg.println("To: " + to); msg.println("Subject: Hello SmtpClient");

// blank line between headers and message msg.println(); msg.println("This is a test message.");

smtp.closeServer(); }}

How can I get a list of messages from my POP3 server?Location: http://www.jguru.com/faq/view.jsp?EID=17030 Created: Feb 22, 2000 Modified: 2000-07-25 12:54:43.311Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

After getting a POP3 provider for JavaMail (quite possibly from Sun at http://java.sun.com/products/javamail/pop3.html, getting a list of messages involves the following steps:

1. Creating a session 2. Getting a store for the POP3 provider 3. Getting a folder to read messages from (even if the provider doesn't use

folders) 4. Then finally getting a directory of messages

The following program demonstrates this:

import javax.mail.*;import javax.mail.internet.*;

public class GetListExample { public static void main (String args[]) throws Exception { String host = args[0]; String username = args[1]; String password = args[2];

// Get session Session session = Session.getInstance( System.getProperties(), null);

// Get the store Store store = session.getStore("pop3"); store.connect(host, username, password);

// Get folder

http://java.sun.com/products/javamail/pop3.html



Folder folder = store.getFolder("INBOX"); folder.open(Folder.READ_ONLY);

// Get directory Message message[] = folder.getMessages(); for (int i=0, n=message.length; i<n; i++) { System.out.println(i + ": " + message[i].getFrom()[0] + "\t" + message[i].getSubject()); }

// Close connection folder.close(false); store.close(); }}

How do you delete a message from the mail server?Location: http://www.jguru.com/faq/view.jsp?EID=17035 Created: Feb 23, 2000 Modified: 2000-07-25 12:55:22.365Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by Benjamin Alejandro Rodriguez Rengifo (http://www.jguru.com/guru/viewbio.jsp?EID=16246

The basic process of deleting a message is to call setFlag() on the message and set the Flags.Flag.DELETED flag to true.

message.setFlag(Flags.Flag.DELETED, true);

Then, when you close the folder, deleted messages will be removed.

Be sure to open the folder for read/write access:

folder.open(Folder.READ_WRITE);

The following program demonstrates listing each message in the folder and prompting for deletion:

import java.io.*;import javax.mail.*;import javax.mail.internet.*;

public class DeleteMessageExample { public static void main (String args[]) throws Exception { String host = args[0]; String username = args[1]; String password = args[2];


// Get the store Store store = session.getStore("pop3");




store.connect(host, username, password);

// Get folder Folder folder = store.getFolder("INBOX"); folder.open(Folder.READ_WRITE);

BufferedReader reader = new BufferedReader ( new InputStreamReader(System.in));

// Get directory Message message[] = folder.getMessages(); for (int i=0, n=message.length; i<n; i++) { System.out.println(i + ": " + message[i].getFrom()[0] + "\t" + message[i].getSubject());

System.out.println("Do you want to delete message? [YES to delete]"); String line = reader.readLine(); // Mark as deleted if appropriate if ("YES".equals(line)) { message[i].setFlag(Flags.Flag.DELETED, true); } }

// Close connection folder.close(true); store.close(); }}

You can also expunge() the Folder. However, the POP3 server from Sun does not support this operation.

How can I read a mail message from my mail server?Location: http://www.jguru.com/faq/view.jsp?EID=17193 Created: Feb 23, 2000 Modified: 2000-08-22 14:15:56.377Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

The Message objects include writeTo() method. All you have to do is specify a stream to write to. The following program demonstrates this:

import java.io.*;import java.util.Properties;import javax.mail.*;import javax.mail.internet.*;

public class GetMessageExample { public static void main (String args[]) throws Exception { String host = args[0]; String username = args[1]; String password = args[2];

// Create empty properties Properties props = new Properties();





// Get folder Folder folder = store.getFolder("INBOX"); folder.open(Folder.READ_ONLY);



System.out.println( "Do you want to read message? [YES to read/QUIT to end]"); String line = reader.readLine(); // Mark as deleted if appropriate if ("YES".equals(line)) { message[i].writeTo(System.out); } else if ("QUIT".equals(line)) { break; } }


For really long messages, you might want to display the output in a TextArea instead of to System.out.


For an IMAP provider, use "imap" instead... Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7), Apr 21, 2000For an IMAP provider, use "imap" instead of "pop3" when you get the session store.

How do I send mail from an applet?Location: http://www.jguru.com/faq/view.jsp?EID=17409 Created: Feb 23, 2000 Modified: 2000-07-27 09:22:00.606Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

There are many different ways:



• You can speak SMTP directly • You can use the non-standard sun.net.smtp.SmtpClient class • You can use the JavaMail API

Keep in mind though that the SMTP server to use must be the same as the web server. If that is not the case, you would need to create something like a servlet on the web server that used one of the three options listed.

See also http://java.sun.com/products/javamail/FAQ.html#applets in the Sun JavaMail FAQ.

How do you send mail using the JavaMail API through a proxy server?I have connected to the net through a proxy server and I also have a firewall installed. When I try to execute demo programs given in JavaMail API, I do not get any errors and everything seems to be ok, but my mail has not reached the destination. Location: http://www.jguru.com/faq/view.jsp?EID=21068 Created: Mar 6, 2000 Modified: 2000-12-11 06:31:12.53Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by Vinod Tadepalli (http://www.jguru.com/guru/viewbio.jsp?EID=19366

If you're "proxying" SMTP, what you're really doing is just running an SMTP relay on the firewall box. You would need to put different rules for incoming versus outgoing in the firewall.

Keep in mind that (normally) a proxy only forwards HTTP requests. You would need to setup a socks gateway to connect to the mail server, but it requires a socks server installed somewhere in your network.


How can I make URL connections through a proxy server?... Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7), Aug 28, 2000How can I make URL connections through a proxy server? shows the necessary proxy settings.

How does JavaMail deal with queuing mail when the initial attempt fails?Location: http://www.jguru.com/faq/view.jsp?EID=23401 Created: Mar 12, 2000 Modified: 2000-07-25 12:57:28.387Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by John Mitchell PREMIUM (http://www.jguru.com/guru/viewbio.jsp?EID=4

It doesn't. A javax.mail.MessagingException will be thrown if there is a failure in sending the message. It is your responsibility to try to recover. The MessagingException class maintains a linked list of exceptions that caused the problem, as there may be more than one. You get each one by following the return of getNextException().








http://java.sun.com/products/javamail/FAQ.html#applets




How can I find out how many messages are waiting to be read on my IMAP/POP server?Location: http://www.jguru.com/faq/view.jsp?EID=25270 Created: Mar 16, 2000 Modified: 2000-07-25 12:58:44.354Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

The getMessageCount() method of Folder reports this information. The following program demonstrates. import javax.mail.*;import javax.mail.internet.*;

public class GetCountExample { public static void main (String args[]) throws Exception { String host = args[0]; String username = args[1]; String password = args[2];




// Get Count int count = folder.getMessageCount(); System.out.println("Messages waiting: " + count); count = folder.getUnreadMessageCount(); System.out.println("Unread messages waiting: " + count);


Where can I find an NNTP provider for the JavaMail API?Location: http://www.jguru.com/faq/view.jsp?EID=26204 Created: Mar 20, 2000 Modified: 2004-12-31 04:37:02.756Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

Knife (http://bluezoo.org/knife/) is a free mail and user news agent that uses the JavaMail API and comes with a POP3 and NNTP provider. It is distributed under the GNU General Public License. A second source for the JAR files is http://www.vroyer.org/lgpl/.

http://www.vroyer.org/lgpl/

http://bluezoo.org/knife/





How does one determine the number of new mail messages in a POP account?Location: http://www.jguru.com/faq/view.jsp?EID=26898 Created: Mar 21, 2000 Modified: 2000-07-25 12:59:22.252Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by Sriram Gopalan (http://www.jguru.com/guru/viewbio.jsp?EID=23852

POP servers do not support flags like read or answered. It is only meant for forwarding messages to an appropriate client store. IMAP is one such protocol that will report flags where you can find out how many new messages are to be read.Comments and alternative answers

If the provider supported it, the Folder.getUnread... Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7), Mar 22, 2000If the provider supported it, the Folder.getUnreadMessageCount() method would provide the answer.

Retreive the number of new, unread and old messages in pop3 Author: Stan Ozier (http://www.jguru.com/guru/viewbio.jsp?EID=755306), Feb 11, 2002

True, Flags are usually not supported, but most of POP3 servers include a header field "status" to let you find out if the message is read, unread or new.

The following code is an example that explains and compares the 2 methods.


public class GetMessageExample { public static void main (String args[]) throws Exception { String host = args[0]; String username = args[1]; String password = args[2];


// Get session Session session = Session.getDefaultInstance(props, null);


// Connect to store store.connect(host, username, password);




// Get folder Folder folder = store.getFolder("INBOX");

// Open read-only folder.open(Folder.READ_ONLY);

// Get stats int mCount = folder.getMessageCount(); int mNewCount = folder.getNewMessageCount(); int mUnreadCount = folder.getUnreadMessageCount();

int mNewCount2 = 0; int mUnreadCount2 = 0;

System.out.println("\nInbox of user "+username+" on POP3 server "+host+"\n");

for (int i=1; i<=mCount; i++) {

String status = " "; // display 'N' for new, 'U' for unread, ' ' for read messages

Message message = folder.getMessage(i); String[] statusHeader = message.getHeader("Status"); if (statusHeader.length > 0) { // Let's suppose there's only one status header if (statusHeader[0].equals("")) { // new message status = "N"; mNewCount2++; // mUnreadCount2++; // shall we consider that a new message is also unread ? } else if (statusHeader[0].equals("O")) { // unread message status = "U"; mUnreadCount2++; } else if (statusHeader[0].equals("RO")) { // message read } } else { // no status in header? // you should check for flags are they may be supported if (message.isSet(Flags.Flag.RECENT)) { status = "N"; } else if (!message.isSet(Flags.Flag.SEEN)) { status = "U"; } } System.out.println("\t"+status+" "+i+": "+message.getSubject()); } System.out.println("\nFolder contains a total of "+mCount+" messages"); System.out.println("\nFolder methods return:\t"+mNewCount+"

new,\t"+mUnreadCount+" unread\t"); System.out.println("Message Headers return:\t"+mNewCount2+" new,\t"+mUnreadCount2+" unread\t\n");


Re: Retreive the number of new, unread and old messages in pop3 Author: Vladimir Bilyov (http://www.jguru.com/guru/viewbio.jsp?EID=710818), May 14, 2004It works only in several cases (better to say servers). I couldn't find this header in any pop3 rfc.More over I have a deal with pop server that doesn't suppport this flag :-(So it is better to check server that you use.

How do I deal with attachments when reading messages?Location: http://www.jguru.com/faq/view.jsp?EID=26996 Created: Mar 22, 2000 Modified: 2001-08-19 09:04:23.411Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

When a message includes an attachment, the content of the message will be Multipart [message.getContent() instanceof Multipart] instead of Part. You'll need to get each part of the Multipart and process it [for (int i=0, n=multipart.getCount(); i<n; i++) process(multipart.getBodyPart(i))] based upon its disposition [part.getDisposition()] and content type [part.getContentType()].

The following program demonstrates this capability, leaving out the exception handling:


public class GetParts { public static void main (String args[]) throws Exception { String host = args[0]; String username = args[1]; String password = args[2];

// Get session Session session = Session.getInstance( new Properties(), null);




store.connect(host, username, password);




System.out.println( "Do you want to get the content? [YES to read/QUIT to end]"); String line = reader.readLine(); if ("YES".equals(line)) { Object content = message[i].getContent(); if (content instanceof Multipart) { handleMultipart((Multipart)content); } else { handlePart(message[i]); } } else if ("QUIT".equals(line)) { break; } }

// Close connection folder.close(false); store.close(); } public static void handleMultipart(Multipart multipart) throws MessagingException, IOException { for (int i=0, n=multipart.getCount(); i<n; i++) { handlePart(multipart.getBodyPart(i)); } } public static void handlePart(Part part) throws MessagingException, IOException { String disposition = part.getDisposition(); String contentType = part.getContentType(); if (disposition == null) { // When just body System.out.println("Null: " + contentType); // Check if plain if ((contentType.length() >= 10) && (contentType.toLowerCase().substring( 0, 10).equals("text/plain"))) { part.writeTo(System.out); } else { // Don't think this will happen System.out.println("Other body: " + contentType); part.writeTo(System.out); }

} else if (disposition.equalsIgnoreCase(Part.ATTACHMENT)) { System.out.println("Attachment: " + part.getFileName() + " : " + contentType); saveFile(part.getFileName(), part.getInputStream()); } else if (disposition.equalsIgnoreCase(Part.INLINE)) { System.out.println("Inline: " + part.getFileName() + " : " + contentType); saveFile(part.getFileName(), part.getInputStream()); } else { // Should never happen System.out.println("Other: " + disposition); } } public static void saveFile(String filename, InputStream input) throws IOException { if (filename == null) { filename = File.createTempFile("xx", ".out").getName(); } // Do no overwrite existing file File file = new File(filename); for (int i=0; file.exists(); i++) { file = new File(filename+i); } FileOutputStream fos = new FileOutputStream(file); BufferedOutputStream bos = new BufferedOutputStream(fos);

BufferedInputStream bis = new BufferedInputStream(input); int aByte; while ((aByte = bis.read()) != -1) { bos.write(aByte); } bos.flush(); bos.close(); bis.close(); }}Comments and alternative answers

Decode the name of the attachments... Lotus Notes Release 5.X only! Author: Andriano Franck (http://www.jguru.com/guru/viewbio.jsp?EID=703045), Dec 13, 2002With Lotus Notes Release 5.X ("Cacahuète jaune... in french!") you need to decode the name of the attachment... use MimeUtility.decodeText!

if ((disposition != null) && ( disposition.equals(Part.ATTACHMENT) || disposition.equals(Part.INLINE) ) ) {String filename = MimeUtility.decodeText(part.getFileName()); // for Lotus Notes only!String path_filename = saveFile(filename, part.getInputStream());}

Best regards,

/Franck

handleMultipart should be recursive Author: henry hess (http://www.jguru.com/guru/viewbio.jsp?EID=1231029), Mar 6, 2005i'm a beginner in working with the javamail api so please correct me if i'm wrong but i think a method that handles multipart content has to be recursive due to the fact that the single parts of the multipart mail can also be multiparts. especially mail clients like outlook often produce these kind of nested e-mails when sending html with picture files included.

How do I encrypt the body text of an email? Can I use PGP in conjunction with JavaMail?Location: http://www.jguru.com/faq/view.jsp?EID=29831 Created: Mar 29, 2000 Modified: 2000-04-24 19:51:06.138Author: Shiva Kumar (http://www.jguru.com/guru/viewbio.jsp?EID=29825) Question originally posed by Gary Moh (http://www.jguru.com/guru/viewbio.jsp?EID=23320

If you are an US/Canadian you can use the JCE (Java Cryptographic Extension), available from Sun (http://java.sun.com/products/jce/). Remember that after encryption, you will get binary output, so don't forget to base64 encode, otherwise X.25 mailing systems may corrupt the mailed data.Comments and alternative answers

You can also get an S/MIME implementation that deals... Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7), Apr 19, 2000You can also get an S/MIME implementation that deals with signing and encryption. See another FAQ entry for a few pointers.

How do I send email with attachments using the JavaMail API? Location: http://www.jguru.com/faq/view.jsp?EID=30251 Created: Mar 30, 2000 Modified: 2000-10-20 06:21:26.37Author: Sateesh Rudrangi (http://www.jguru.com/guru/viewbio.jsp?EID=2996) Question originally posed by subba pathipati (http://www.jguru.com/guru/viewbio.jsp?EID=29238

Here is the code to send an attachment:

import java.util.Properties;import javax.mail.*;import javax.mail.internet.*;import javax.activation.*;





http://java.sun.com/products/jce/




public class AttachExample { public static void main (String args[]) throws Exception { String host = args[0]; String from = args[1]; String to = args[2]; String fileAttachment = args[3];




// Define message MimeMessage message = new MimeMessage(session); message.setFrom( new InternetAddress(from)); message.addRecipient( Message.RecipientType.TO, new InternetAddress(to)); message.setSubject( "Hello JavaMail Attachment");

// create the message part MimeBodyPart messageBodyPart = new MimeBodyPart();

//fill message messageBodyPart.setText("Hi");

Multipart multipart = new MimeMultipart(); multipart.addBodyPart(messageBodyPart);

// Part two is attachment messageBodyPart = new MimeBodyPart(); DataSource source = new FileDataSource(fileAttachment); messageBodyPart.setDataHandler( new DataHandler(source)); messageBodyPart.setFileName(fileAttachment); multipart.addBodyPart(messageBodyPart);

// Put parts in message message.setContent(multipart);

// Send the message Transport.send( message ); }}

How can I send an attachment using sun.net.smtp.SmtpClient?Location: http://www.jguru.com/faq/view.jsp?EID=36079 Created: Apr 13, 2000 Modified: 2000-07-25 13:03:06.548Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by Vinay Ghule (http://www.jguru.com/guru/viewbio.jsp?EID=11951

From the looks of the public API:

public class sun.net.smtp.SmtpClient extends sun.net.TransferProtocolClient { public void closeServer() throws IOException; public void to(String) throws IOException; public void from(String) throws IOException; public PrintStream startMessage() throws IOException; public sun.net.smtp.SmtpClient(String) throws IOException; public sun.net.smtp.SmtpClient() throws IOException; public String getMailHost();}It appears to only support sending simple messages, not attachments. You'll need to use the JavaMail capabilities instead.

How secure is JavaMail?Location: http://www.jguru.com/faq/view.jsp?EID=38021 Created: Apr 19, 2000 Modified: 2000-04-19 20:55:04.721Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by John Mitchell PREMIUM (http://www.jguru.com/guru/viewbio.jsp?EID=4

If you are worried about security with your mail, you would need to get an S/MIME provider to work with JavaMail. This would include support for email signing and encryption. The Phaos S/MIME toolkit and JCSI are two implementations you can look into.Comments and alternative answers

http://security.dstc.edu.au/projects/java/release2.html

http://www.phaos.com/e_security/prod_smime.html







One more thing to worry about Author: Eugene Kuleshov (http://www.jguru.com/guru/viewbio.jsp?EID=442441), Nov 19, 2001S/MIME gives secure or trusted message content but if you have a real paranoya and don't want to have even a little chance that your messages will be intercepted you should use secure transport.

So. You have to add TLS/SSL to all your JavaMail connections (smtp, pop3, imap, nntp, etc.). More details is here.

How do I include a text name with the from header, besides just an email address?Location: http://www.jguru.com/faq/view.jsp?EID=38450 Created: Apr 20, 2000 Modified: 2000-07-25 13:12:22.844Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

The message.setFrom(new InternetAddress(from)); line is suffcient to include a name with the line, where from would be a string like "\"Bill Clinton\" <[email protected]>". You can also use the constructor public InternetAddress(java.lang.String address, java.lang.String personal) that allows you to pass the address and personal information separately. Or, you can even call the setPersonal() method to directly set the information on an existing InternetAddress.

Can I get a trace of the actual SMTP commands sent to the mail server?Location: http://www.jguru.com/faq/view.jsp?EID=38705 Created: Apr 21, 2000 Modified: 2000-04-21 07:52:05.1Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

Yes. For your mail session, set the debug property to true: session.setDebug(true).

How can I add/delete mail user accounts with JavaMail?Location: http://www.jguru.com/faq/view.jsp?EID=38708 Created: Apr 21, 2000 Modified: 2000-08-25 16:05:57.24Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

There is no support for this built into the API.

According to Sun's JavaMail FAQ:

The JavaMail API does not include any facilities for adding, removing, or changing user accounts. There are no standards in this area; every mail server handles this differently.

How can I reply to a message?Location: http://www.jguru.com/faq/view.jsp?EID=38717


http://java.sun.com/products/javamail/FAQ.html#newusers







http://www.javaworld.com/javatips/jw-javatip115.html

Created: Apr 21, 2000 Modified: 2000-07-25 13:14:09.835Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

Calling the reply() method of the Message class will create a properly created header for your reply. If you wish to include the content of the original message, you'll have to include it yourself.

How do I efficiently send a bulk mailing, where I want to send mail out to lots of recipients, not all on the same TO/CC/BCC line?Location: http://www.jguru.com/faq/view.jsp?EID=38720 Created: Apr 21, 2000 Modified: 2000-10-12 19:02:32.099Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

Get the necessary Transport object and call sendMessage() on it for each message. Be sure to set/change recipients between calls.

Message message = ...;Transport t = session.getTransport("smtp");t.connect();

message.setRecipient( Message.RecipientType.TO, recipient1);t.sendMessage(message, recipient1Array);message.setRecipient( Message.RecipientType.TO, recipient2);t.sendMessage(message, recipient2Array);message.setRecipient( Message.RecipientType.TO, recipient3);t.sendMessage(message, recipient3Array);

t.close();Comments and alternative answers

This does not strike me as particularly efficient.... Author: Peter Snow (http://www.jguru.com/guru/viewbio.jsp?EID=215260), Oct 12, 2000This does not strike me as particularly efficient. The same message is sent over and over again to the mail server. A better way to do it would be simply to set up an array of Address objects and then send them in one call using sendMessage. For example:

Transport transport = session.getTransport(addressObjects[0]);transport.connect();transport.sendMessage(message,addressObjects);

The mail server will then take the one copy of the message and send it to multiple addresses. It doesn't need to receive thousands of copies of the same message.




Optionally, you could specify an address to appear in the "TO:" header:

message.setRecipient(Message.RecipientType.TO, addressObjects[0]);

setRecipient() only specifies what appears in the "TO:" header in the email, it doesn't have to match the address in the Address objects.

FAQ Manager Note: The problem with including all of them in the TO field though is all the addresses are visible. If you must show the specific TO address or include a specific footer for each user for unsubscribing, you're stuck with sending separate messages.

How do I use BCC to hide recipient addresses?Location: http://www.jguru.com/faq/view.jsp?EID=38725 Created: Apr 21, 2000 Modified: 2000-07-25 13:16:02.296Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by John Zukowski PREMIUM (http://www.jguru.com/guru/viewbio.jsp?EID=7

When you add a recipient InternetAddress, use Message.RecipientType.BCC:

String addressString = "[email protected]";InternetAddress bcc = new InternetAddress(addressString);message.addRecipient( Message.RecipientType.BCC, bcc);Comments and alternative answers

Another way Author: Chris Chen (http://www.jguru.com/guru/viewbio.jsp?EID=454197), Jul 12, 2001message.addHeader("bcc","[email protected]"); will let you bcc also.

How do you find out the text character set in the message body?Location: http://www.jguru.com/faq/view.jsp?EID=39071 Created: Apr 22, 2000 Modified: 2000-07-25 14:02:00.758Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by ronen portnoy (http://www.jguru.com/guru/viewbio.jsp?EID=27420

You should find this in the ContentType of the part. If you're lucky, it will be present as something like "text/plain; charset=foobar". However, I don't believe this is required.

http://java.sun.com/products/javamail/javadocs/javax/mail/internet/ContentType.html







What are the distribution limitations of Sun's reference implementation?Location: http://www.jguru.com/faq/view.jsp?EID=40126 Created: Apr 25, 2000 Modified: 2000-04-25 10:11:10.436Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

According to the license that comes with the distribution, you are free to redistribute the unmodified JAR files.

Are there any other FAQs for JavaMail?Location: http://www.jguru.com/faq/view.jsp?EID=40659 Created: Apr 26, 2000 Modified: 2000-07-25 14:54:12.776Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

Sun maintains a FAQ on JavaMail at http://java.sun.com/products/javamail/FAQ.html.

How can I incorporate mail facilities into JSP pages?Location: http://www.jguru.com/faq/view.jsp?EID=42156 Created: Apr 28, 2000 Modified: 2000-04-28 20:22:58.827Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by Gunjan Vaishnav (http://www.jguru.com/guru/viewbio.jsp?EID=34698

Why, by using the JavaMail API of course... Your best bet is to create some JavaBeans that do all the work and access the beans from the JSP pages. You'll need to include the appropriate mail classes in the CLASSPATH of your server. If you don't want to create the beans yourself, you can always buy them. ImMailBean is one such product.Comments and alternative answers

Or you could check out the JavaMail tag library at... Author: Kellan Elliott-McCrea (http://www.jguru.com/guru/viewbio.jsp?EID=40670), Apr 30, 2000Or you could check out the JavaMail tag library at Source Forge

How do I send an HTML content message through the JavaMail API? Location: http://www.jguru.com/faq/view.jsp?EID=43236 Created: May 2, 2000 Modified: 2000-08-23 06:54:32.26Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by Salman Ahmed (http://www.jguru.com/guru/viewbio.jsp?EID=41787

First create a String object containg the HTML text for the message. Then use setContent() to set the message content to a specific content-type. For example : String msgText = getHtmlMessageText(...);msg.setContent(msgText, "text/html");Comments and alternative answers

HTML




http://sourceforge.net/project/?group_id=1282

http://www.imessaging.com/html/immailbean.html




http://java.sun.com/products/javamail/FAQ.html



http://java.sun.com/products/javamail/LICENSE.txt



Author: Rahul Parmar (http://www.jguru.com/guru/viewbio.jsp?EID=1147635), Feb 19, 2004In case you are creating an email with a MultiPart Message, you should do something like this:

Multipart mp = new MimeMultipart();

MimeBodyPart mbp1 = new MimeBodyPart();mbp1.setContent(body, "text/html");mp.addBodyPart(mbp1);

..add other file attachments to Multipart...

A lot of code has been written that uses MimeBodyPart.setText(String body) for the message. That will not work as it uses "text/plain" and doesn't support "text/html" encoding.

Where do I place the JAR files so that I can use JavaMail from JSP?Location: http://www.jguru.com/faq/view.jsp?EID=45978 Created: May 8, 2000 Modified: 2000-05-08 10:08:08.318Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

Using the JavaMail API from JSP pages requires the JavaMail and JavaBeans Activation Framework JAR files (mail.jar and activation.jar respectively) to be in the CLASSPATH for the Java runtime of your JSP-enabled web server. While most servers allow you to configure their CLASSPATH, either through mucking with batch files or through some configuration program, the easiest way to configure the server is to take advantage of the standard Java Extensions Mechanism. Just copy the JAR files into the ext under your Java runtime directory. For instance, Windows users of Java 1.2.2 who installed to the default location would copy the JAR files to C:\JDK1.2.2\JRE\LIB\EXT.Comments and alternative answers

If you are deploying your application as a "j2ee... Author: Simon Brown (http://www.jguru.com/guru/viewbio.jsp?EID=44588), May 10, 2000If you are deploying your application as a "j2ee web application", an alternative (and more portable) solution is to place the relevant JAR files in a "lib" directory underneath the "web-inf" directory.

This way, you can easily distribute the web application and its dependencies as one unit (i.e. the WAR file).

How can I use an Authenticator to prompt for username and password when reading mail from a IMAP/POP server?Location: http://www.jguru.com/faq/view.jsp?EID=46850 Created: May 9, 2000 Modified: 2000-07-25 14:06:22.939


http://java.sun.com/products/jdk/1.3/docs/guide/extensions/index.html



Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by John Zukowski PREMIUM (http://www.jguru.com/guru/viewbio.jsp?EID=7

Keep in mind that the Authenticator in JavaMail is different than the one in the java.net package. To use the javax.mail.Authenticator, the basic process to connect to the Store is as follows:

// Create empty propertiesProperties props = new Properties();props.put("mail.host", host);

// Setup authentication, get sessionAuthenticator auth = new PopupAuthenticator();Session session = Session.getInstance( props, auth);

// Get the storeStore store = session.getStore("pop3");store.connect();Then, you would need to create a PopupAuthenticator class that extends Authenticator. In the public PasswordAuthentication getPasswordAuthentication() method, the class would pop a frame up prompting for username and password, returning the information in a PasswordAuthentication object.

How do I set up a default mime type for unknown file types using MimetypesFileTypeMap? At present when sending a message with an attached file of unknown file type a NullPointerException is thrown.Location: http://www.jguru.com/faq/view.jsp?EID=47665 Created: May 11, 2000 Modified: 2001-07-24 10:37:07.552Author: Rajesh Ajmera (http://www.jguru.com/guru/viewbio.jsp?EID=47656) Question originally posed by Chris Webb (http://www.jguru.com/guru/viewbio.jsp?EID=2096

Just create a new map and ask:

MimetypesFileTypeMap mmp = new MimetypesFileTypeMap();System.out.println(mmp.getContentType("d:\\rajesh\\abc.jpg"));

How do I store messages locally using JavaMail?Location: http://www.jguru.com/faq/view.jsp?EID=47747 Created: May 11, 2000 Modified: 2000-05-11 08:41:31.696Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by Anand Naik (http://www.jguru.com/guru/viewbio.jsp?EID=44857

The JavaMail API provides the core interfaces for working with many different types of providers. Sun provides implementations of SMTP and IMAP with the JavaMail









implementation and freely offers a POP3 provider separately. In order to use the JavaMail API to provide a local data store for your messages involves just getting another provider. One such provider of a mailbox file is Knife which is distributed under the GNU Lesser General Public Licence. For a list of additional providers see Sun's list at http://java.sun.com/products/javamail/Third_Party.html.Comments and alternative answers

This can be achieved using the writeTo() method of... Author: Rajesh Ajmera (http://www.jguru.com/guru/viewbio.jsp?EID=47656), May 11, 2000This can be achieved using the writeTo() method of MimeMessage class.Yes, you have to use object of MimeMessage instead of using object of Message class.The following code can be helpful :

FileOutputStream fos = new FileOutputStream("test.mail");mimemessage.writeTo(fos);

How do I encode the string that I want to send so that the message is mail safe?Location: http://www.jguru.com/faq/view.jsp?EID=47805 Created: May 11, 2000 Modified: 2000-07-25 14:07:02.652Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by Chinnappa Codanda (http://www.jguru.com/guru/viewbio.jsp?EID=47761

When you call setText(message) on the MimePart/MimeMessage this will encode the string for you using the platform's default character set. If you know the character set, you can call setText(message, charset), which will be faster for larger messages.Comments and alternative answers

I did put the setText(...) in but it still did not... Author: Chinnappa Codanda (http://www.jguru.com/guru/viewbio.jsp?EID=47761), May 11, 2000I did put the setText(...) in but it still did not work. Apparently if in the message the lines are too long the SMTP server seems to think it is encoded as "quoted-printable' and converts the message to 8bit. When I restricted the maximum length of a line to 72 everything worked fine.

Where can I get the source code for the JavaMail classes?Location: http://www.jguru.com/faq/view.jsp?EID=48755 Created: May 13, 2000 Modified: 2000-05-13 11:29:09.911Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)






http://java.sun.com/products/javamail/Third_Party.html

http://www.gnu.org/copyleft/lesser.html

http://www.dog.net.uk/knife/

The source for Sun's reference implementation of the JavaMail API is available as part of the J2EE 1.2 Sun Community Source Licensing release, available from http://www.sun.com/software/communitysource/j2ee/index.html.

If my mail server requires authentication to send messages, how do I set my username/password through the JavaMail API so I don't get a 'javax.mail.SendFailedException: 550 Relaying is prohibited' error?Location: http://www.jguru.com/faq/view.jsp?EID=48895 Created: May 14, 2000 Modified: 2001-07-25 08:44:44.659Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by Bram Stieperaere (http://www.jguru.com/guru/viewbio.jsp?EID=48026

When you connect to the Transport you can pass a username and password:

Transport transport = session.getTransport("smtp");transport.connect( host, username, password);

Unfortunately, this doesn't use the Authenticator class in javax.mail, so you would have to build in your own mechanism to prompt the user for this information.

You may also need to set the mail.smtp.auth property to true:

props.put("mail.smtp.auth", "true");

How do you get the file attachment size? I tried using multipart.getBodyPart(i).getSize(), but this returns -1.Location: http://www.jguru.com/faq/view.jsp?EID=53410 Created: May 21, 2000 Modified: 2000-07-25 14:18:28.298Author: Andrea Pompili (http://www.jguru.com/guru/viewbio.jsp?EID=51802) Question originally posed by Sunil San (http://www.jguru.com/guru/viewbio.jsp?EID=42975

In this situation you can do this: size = multipart.getBodyPart(i). getInputStream().available();[Manager Note: This works perfectly for text (7-bit) attachments. In the case of binary attachments, they will be encoded so the stream size will be slightly larger.]Comments and alternative answers

The encoded form of the file is expanded by 37% for... Author: Dieter Wimberger (http://www.jguru.com/guru/viewbio.jsp?EID=25708), Nov 5, 2000The encoded form of the file is expanded by 37% for UU encoding and by 35% for base64 encoding (3 bytes become 4 plus control information).







http://www.sun.com/software/communitysource/j2ee/index.html

size=bodyPart.getInputStream().available()*0.65;

should therefore be pretty close to the real size.

How do I check if an email address string is valid, like [email protected], both for a valid/working domain name and for address within domain?Location: http://www.jguru.com/faq/view.jsp?EID=54630 Created: May 23, 2000 Modified: 2000-05-23 12:38:19.57Author: Tripp Lilley (http://www.jguru.com/guru/viewbio.jsp?EID=1743) Question originally posed by Jim Garrett (http://www.jguru.com/guru/viewbio.jsp?EID=53862

Use the javax.mail.internet.InternetAddress class from the JavaMail API.

Note that there is no way to verify that an address actually exists and is a working "inbox" short of sending a message to it and waiting to receive a "bounce" message indicating some kind of delivery failure. The best you can hope to do is validate that the form of the address conforms to governing standards.

The governing standard, in this case, is the IETF's RFC 822 - STANDARD FOR THE FORMAT OF ARPA INTERNET TEXT MESSAGES.


You can also try to verify the MX (mail exchange) ... Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7), Sep 20, 2000You can also try to verify the MX (mail exchange) record yourself with classes like MX Lookup Client Version from AXL.

You can also verify the MX record for free using the... Author: Patrick Gibson (http://www.jguru.com/guru/viewbio.jsp?EID=301077), Jan 12, 2001You can also verify the MX record for free using the dnsjava package.

Complete e-mail verification tool Author: Brien Voorhees (http://www.jguru.com/guru/viewbio.jsp?EID=328000), May 11, 2001You might want to check out JVerify at http://www.jscape.com/jverify.html . It claims to do complete verification including address syntax, mx-lookup, and connecting to the server to see if the address is accepted.

How can I use SearchTerm to match specific messages with POP/IMAP servers?Location: http://www.jguru.com/faq/view.jsp?EID=56461 Created: May 25, 2000 Modified: 2000-07-25 14:20:07.358


http://www.xbill.org/dnsjava/

http://www.theorem.com/java/index.htm

http://www.ietf.org/rfc/rfc0822.txt


http://www.ietf.org/

http://java.sun.com/products/javamail/javadocs/javax/mail/internet/InternetAddress.html#InternetAddress(java.lang.String)




Author: Andrea Pompili (http://www.jguru.com/guru/viewbio.jsp?EID=51802) Question originally posed by John Zukowski PREMIUM (http://www.jguru.com/guru/viewbio.jsp?EID=7

You have to build a condition tree using the single SearchTerm blocks given in the JM API (package javax.mail.search.*).The SearchTerm blocks are of this type:

• AND terms (class AndTerm) • OR terms (class OrTerm) • NOT terms (class NotTerm) • SENT DATE terms (class SentDateTerm) • CONTENT terms (class BodyTerm) • HEADER terms (From, Recipients, Subjects, etc..) (classes FromStringTerm,

RecipientStringTerm, SubjectTerm)

Once you have built the searching term using these blocks, you have to use this method:foldername.search(search term);For example, to search in the INBOX folder all messages with body and subject containing the word "hello" you have to write that://Initialize the folder and the search termFolder folder = store.getFolder("INBOX");SearchTerm st = new AndTerm( new SubjectTerm("hello"), new BodyTerm("hello");

Message[] msgs = folder.search(st);Now you have an array of messages that match your request.This code doesn't depend on the protocol used and is the same in POP3, IMAP, or other existing protocol.

If you want you can write your own search term extending one of these classes and writing inside your own searching logic.

I have written a DataHandler for multipart/signed messages. However, I am unable to obtain the value of micalg field from the Content-Type header of a Message. How do I get the value of micalg? Location: http://www.jguru.com/faq/view.jsp?EID=59042 Created: May 29, 2000 Modified: 2000-07-25 14:23:31.911Author: Andrea Pompili (http://www.jguru.com/guru/viewbio.jsp?EID=51802) Question originally posed by Godson Menezes (http://www.jguru.com/guru/viewbio.jsp?EID=57114

You have to extract directly the Content Type Header from the Message and extract it manually (or using the ContentType class):

Example (it's only an example, I don't include error chekings or other):Message msg = ... (code for generating it);






//Other code...

MimeMessage mimeMsg = (MimeMessage)msg;String[] all = mimeMsg.getHeader("Content-Type");String ctype = "";

for (int i = 0; i < all.length; i++) ctype += all[i] + " ";

int idx1 = ctype.indexOf("micalg=");int idx2 = ctype.indexOf(";", idx1); String micalg = ctype.substring(idx1, idx2);Otherwise you could use the JavaMail API: //As the above example...

MimeMessage mimeMsg = (MimeMessage)msg;String ctype = mimeMsg.getHeader("Content-Type", " ");ContentType ct = new ContentType(ctype);String micalg = ct.getParameter("micalg");Comments and alternative answers

dont use stringin the loop... Author: ftp gogo (http://www.jguru.com/guru/viewbio.jsp?EID=448128), Jul 1, 2001use string buffer instead

Use the API Luke Author: Paul Mitchell-Gears (http://www.jguru.com/guru/viewbio.jsp?EID=1223501), Jan 27, 2005public String getMicalg(MimeMessage aMessage) { return new ContentType(aMesssage.getContentType()).getParameter("micalg");}

How can I use the ESMTP (RFC 1869) protocol with JavaMail?Location: http://www.jguru.com/faq/view.jsp?EID=65108 Created: Jun 5, 2000 Modified: 2000-06-05 07:34:07.251Author: Andrea Pompili (http://www.jguru.com/guru/viewbio.jsp?EID=51802) Question originally posed by Alireza Banaei (http://www.jguru.com/guru/viewbio.jsp?EID=56441

If you look the draft of the JavaMail Specification 1.2 at http://java.sun.com/products/javamail/index.html you can see that it supports ESMTP 8BITMIME extension.

So I think the future release of JavaMail 1.2 will support this protocol.

Here is a section of the draft:"If the property "mail.smtp.allow8bitmime" is set to "true", and the SMTP server

http://java.sun.com/products/javamail/index.html




supports the 8BITMIME extension, the SMTP Transport will traverse the message and adjust the Content-Transfer-Encoding of text body parts from "quoted-printable" or "base64" to "8bit" as appropriate." Comments and alternative answers

Is there a way to restrict the protocol between javamail and the smtp server to use only SMTP, and not use e-SMTP? Author: Sean Kang (http://www.jguru.com/guru/viewbio.jsp?EID=1197159), Sep 3, 2004Is there a way to restrict the protocol between javamail and the smtp server to use only SMTP, and not use e-SMTP? I use this javax.mail.* package and connect to an exchange smtp, which supports ESMTP. However, there is a firewall component which blocks ESMTP protocol. The regular SMTP stuff seems to get through. Any way to retrict the protocol to use only SMTP?

Is there a way to restrict the protocol between javamail and the smtp server to use only SMTP, and not use e-SMTP? Author: Sean Kang (http://www.jguru.com/guru/viewbio.jsp?EID=1197159), Sep 3, 2004Is there a way to restrict the protocol between javamail and the smtp server to use only SMTP, and not use e-SMTP? I use this javax.mail.* package and connect to an exchange smtp, which supports ESMTP. However, there is a firewall component which blocks ESMTP protocol. The regular SMTP stuff seems to get through. Any way to retrict the protocol to use only SMTP?

restrict to only SMTP Author: Sean Kang (http://www.jguru.com/guru/viewbio.jsp?EID=1197159), Sep 3, 2004Is there a way to restrict the protocol between javamail and the smtp server to use only SMTP, and not use e-SMTP? I use this javax.mail.* package and connect to an exchange smtp, which supports ESMTP. However, there is a firewall component which blocks ESMTP protocol. The regular SMTP stuff seems to get through. Any way to retrict the protocol to use only SMTP?

restrict to only SMTP Author: Sean Kang (http://www.jguru.com/guru/viewbio.jsp?EID=1197159), Sep 3, 2004Is there a way to restrict the protocol between javamail and the smtp server to use only SMTP, and not use ESMTP?

I use this javax.mail.* package and connect to an exchange smtp, which supports ESMTP. However, there is a firewall component which blocks ESMTP protocol. The regular SMTP stuff seems to get through.

Any way to retrict the protocol to use only SMTP?

restrict SMTP

Author: Sean Kang (http://www.jguru.com/guru/viewbio.jsp?EID=1197159), Sep 3, 2004Is there a way to restrict the protocol between javamail and the smtp server to use only SMTP, and not use ESMTP?

I use this javax.mail.* package and connect to an exchange smtp, which supports ESMTP. However, there is a firewall component which blocks ESMTP protocol. The regular SMTP stuff seems to get through.

Any way to retrict the protocol to use only SMTP?

How can I send an e-mail outside of the US-ASCII character set? Using MimeUtility.encodeText() leaves the character set in the subject when looking at the message (in MS Outlook). Location: http://www.jguru.com/faq/view.jsp?EID=74374 Created: Jun 13, 2000 Modified: 2000-07-25 14:24:42.459Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by Lena Braginsky (http://www.jguru.com/guru/viewbio.jsp?EID=25428

For the subject, use:MimeMessage.setSubject(String subj, String charset)

How do you use the JNDI ENC to access JavaMail?Location: http://www.jguru.com/faq/view.jsp?EID=75066 Created: Jun 14, 2000 Modified: 2000-06-14 07:30:41.03Author: Steven Lau (http://www.jguru.com/guru/viewbio.jsp?EID=72026) Question originally posed by Se Hee Lee (http://www.jguru.com/guru/viewbio.jsp?EID=21287

First of all, you have to create a javax.mail.Session like you would in accessing other resources such as JDBC connections:

InitialContext ctx = new InitialContext();Session session = (Session) ctx.lookup("java:comp/env/TheMailSession");After that, everything else is the same:

Message msg = new MimeMessage(session);......Depending on the application server you're using, you'll have different ways in setting up the ENC.

How do I pick up the attachment from the client's machine, in a web-based email system?Location: http://www.jguru.com/faq/view.jsp?EID=81033 Created: Jun 20, 2000 Modified: 2001-07-23 10:50:29.979Author: Andrea Pompili (http://www.jguru.com/guru/viewbio.jsp?EID=51802)









Question originally posed by John Zukowski PREMIUM (http://www.jguru.com/guru/viewbio.jsp?EID=7

You can do it using an HTML form, a Servlet and the class MultipartRequest of the O'Reilly package avaiable at http://www.servlets.com/resources/com.oreilly.servlet/.In this zip file (named cos.zip) you can found all the information you need to upload a file using a browser and a servlet.Remember that the file you upload is stored in the server filesystem, so remember to remove it after sending your E-mail.

I tried also another way that worked perfectly, but is more complicated.I wrote three classes :

• A mine DataSource for handling a stream of byte with a filename and a content type

• An ExtendedMultipartRequest class that extracts the parts from the stream of the Servlet (similar to the one provided by O'Reilly)

• A MultipartInputStream for reading the InputStream of the servlet line by line

For creating a message I passed each data (bytes), content-type, and filename parsed by my ExtendedMultipartRequest class to my DataSource. Then I built a DataHandler using this DS and a Message using this as Content... It worked perfectly!!! Comments and alternative answers

See also Author: Alex Chaffee (http://www.jguru.com/guru/viewbio.jsp?EID=3), Jul 23, 2001See also How do I upload a file to my servlet? and the topic Servlets:Files:Uploading

How can I detect when my SMTP server is down? Can it be done by setting a timeout on the Transport.send() call?Location: http://www.jguru.com/faq/view.jsp?EID=80979 Created: Jun 20, 2000 Modified: 2000-07-25 14:25:40.861Author: Andrea Pompili (http://www.jguru.com/guru/viewbio.jsp?EID=51802) Question originally posed by werner mueller (http://www.jguru.com/guru/viewbio.jsp?EID=66596

You can do it in three ways:

1. Setting the Timeout in the property file you use to initialize the session.

mail.smtp.timeout = <timeout>

This works only for the SUN provider, if you use something else you have to see the documentation of that thirdy-part provider.

2. Using the method Transport.connect()In this case, if the server is down you obtain a MessagingException explaining that. Look also at the Transport.protocolConnect(...) method that does





http://www.servlets.com/resources/com.oreilly.servlet/index.html


the same thing.All the methods are inherited by Service class.

3. Trying to enstablish a connection to the address/port of your SMTP Server and waiting for response. No answer means it's down...

How can I rename a folder without creating a new one and moving the messages?Location: http://www.jguru.com/faq/view.jsp?EID=82138 Created: Jun 21, 2000 Modified: 2000-07-25 14:26:09.378Author: Andrea Pompili (http://www.jguru.com/guru/viewbio.jsp?EID=51802) Question originally posed by Jordi Domingo Borras (http://www.jguru.com/guru/viewbio.jsp?EID=51078

If you're using 1.1.3 version of JavaMail you can use this method of the Folder class: boolean renameTo(Folder f) throws MessagingExceptionYou have to create a new Folder object with the desired new name and then apply this method to the Folder you want to rename.If something goes wrong (wrong name, not existing folder, already existing folder...) it returns FALSE.

You must take care of two things:

• The folder you want to rename must be closed. • This works only for IMAP protocol (or others similar), if you call this method in

a POP3 environment you obtain a MethodNotSupportedException.

How / when does one use a TransportListener?Location: http://www.jguru.com/faq/view.jsp?EID=95355 Created: Jul 4, 2000 Modified: 2002-03-30 19:39:29.027Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by Han Feng (http://www.jguru.com/guru/viewbio.jsp?EID=82674

You can add a TransportListener to a specific instance of the Transport you are using. In other words, you have to get a specific Transport, like with Transport transport = session.getTransport("smtp") to get the Transport. You can't just use the send() method to send the message. Once you have a Transport, add a listener with addTransportListener(). It will then be notified of successful or unsuccessful sending of the message. A partially successful send is if some of the recipients are not valid, but at least one is valid.

Also, be sure not to use Transport.send().

How do you send HTML mail with images?Location: http://www.jguru.com/faq/view.jsp?EID=97371 Created: Jul 6, 2000 Modified: 2003-04-12 08:08:16.864Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by Geoff Han (http://www.jguru.com/guru/viewbio.jsp?EID=97195










The basic process of sending an HTML message is described in http://www.jguru.com/jguru/faq/view.jsp?EID=43236. Basically, you need to set the content type for the HTML part.

As far as the images go... you are actually better off leaving them on your server and letting the user's mail tool take care of pulling them across when viewing the HTML file. While yes you can include the images as attachments with the HTML body, what the mail tool does with them you have no control over. For instance, if all attachment files are saved to the same directory (like Eudora) then you must name the image files uniquely in order for the mail tool to be sure to display YOUR images and not some other image that the user received from you or someone else.

Remember to make your image URLs absolute, not relative, too. As relative ones will not resolve properly from the mail client.

If you really want to send them along with the message... You'll need to create a "multipart/related" message. One of the parts will be the HTML part which refers to the other parts which are the image parts. An RFC that contains information about multipart/related messages is available at http://www.faqs.org/rfcs/rfc2387.html.

To reference the other parts, the URL will have to specify the content id / message id, like cid:, instead of http:. This is described in RFC 2111.

The following example was posted to the JavaMail mailing list from lys to demonstrate using the cid:

import java.io.*;import java.util.Properties;import java.util.Date;import javax.mail.*;import javax.activation.*;import javax.mail.internet.*;

public class sendhtml {

public static void main(String[] argv) { new sendhtml(argv); }

public sendhtml(String[] argv) {

String to, subject = null, from = null, cc = null, bcc = null, url = null; String mailhost = null; String mailer = "sendhtml"; String protocol = null, host = null, user = null, password = null; String record = null; // name of folder in which to record mail boolean debug = false; BufferedReader in = new BufferedReader(new InputStreamReader(System.in)); int optind;

for (optind = 0; optind < argv.length; optind++) { if (argv[optind].equals("-T")) {

http://www.oac.uci.edu/indiv/ehood/MIME/rfc2111.txt



protocol = argv[++optind]; } else if (argv[optind].equals("-H")) { host = argv[++optind]; } else if (argv[optind].equals("-U")) { user = argv[++optind]; } else if (argv[optind].equals("-P")) { password = argv[++optind]; } else if (argv[optind].equals("-M")) { mailhost = argv[++optind]; } else if (argv[optind].equals("-f")) { record = argv[++optind]; } else if (argv[optind].equals("-s")) { subject = argv[++optind]; } else if (argv[optind].equals("-o")) { // originator from = argv[++optind]; } else if (argv[optind].equals("-c")) { cc = argv[++optind]; } else if (argv[optind].equals("-b")) { bcc = argv[++optind]; } else if (argv[optind].equals("-L")) { url = argv[++optind]; } else if (argv[optind].equals("-d")) { debug = true; } else if (argv[optind].equals("--")) { optind++; break; } else if (argv[optind].startsWith("-")) { System.out.println("Usage: sendhtml [[-L store-url] | [-T prot] [-H host] [-U user] [-P passwd]]"); System.out.println("\t[-s subject] [-o from-address] [-c cc-addresses] [-b bcc-addresses]"); System.out.println("\t[-f record-mailbox] [-M transport-host] [-d] [address]"); System.exit(1); } else { break; } }

try { if (optind < argv.length) { // XXX - concatenate all remaining arguments to = argv[optind]; System.out.println("To: " + to); } else { System.out.print("To: "); System.out.flush(); to = in.readLine(); } if (subject == null) { System.out.print("Subject: "); System.out.flush(); subject = in.readLine(); } else { System.out.println("Subject: " + subject);

}

Properties props = System.getProperties(); // could use Session.getTransport() and Transport.connect() // assume we're using SMTP if (mailhost != null) props.put("mail.smtp.host", mailhost);

// Get a Session object Session session = Session.getDefaultInstance(props, null); if (debug) session.setDebug(true);

// construct the message Message msg = new MimeMessage(session); if (from != null) msg.setFrom(new InternetAddress(from)); else msg.setFrom();

msg.setRecipients(Message.RecipientType.TO, InternetAddress.parse(to, false)); if (cc != null) msg.setRecipients(Message.RecipientType.CC, InternetAddress.parse(cc, false)); if (bcc != null) msg.setRecipients(Message.RecipientType.BCC, InternetAddress.parse(bcc, false));

msg.setSubject(subject);

MimeMultipart mp = new MimeMultipart();

mp.setSubType("related");

MimeBodyPart mbp1= new MimeBodyPart(); String html = "<html>"+ "<head><title></title></head>"+ "<body>"+ "<b> see the following jpg : it is a car!</b><br>"+ "<a href=a.jsp>hello</a><br>"+ "<IMG SRC=cid:23abc@pc27 width=80% height=60%><br>"+ "<b> end of jpg</b>"+ "</body>"+ "</html>";

mbp1.setContent(html,"text/html");

MimeBodyPart mbp2 = new MimeBodyPart(); FileDataSource fds = new FileDataSource( "d:/html/bmp/1-1-95679_0005.jpg"); mbp2.setFileName(fds.getName()); mbp2.setText("This is a beautiful car !"); mbp2.setDataHandler(new DataHandler(fds)); mbp2.setHeader("Content-ID","<23abc@pc27>");

mp.addBodyPart(mbp1); mp.addBodyPart(mbp2); msg.setContent(mp);

msg.setSentDate(new Date());

Transport.send(msg); System.out.println(mp.getCount()); System.out.println("\nMail was sent successfully.");

} catch (Exception e) { e.printStackTrace(); } }}You can run it by following steps:

1. replace the .gif file with another one on your local machine. 2. javac sendhtml.java 3. java sendhtml -M 111.222.1.21 [email protected] .

* 111.222.1.21 is the SMTP Server

How do I specify the reply-to address of a message?Location: http://www.jguru.com/faq/view.jsp?EID=98939 Created: Jul 9, 2000 Modified: 2000-07-25 14:28:58.575Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by wendy ye (http://www.jguru.com/guru/viewbio.jsp?EID=98119

The setReplyTo() method of the Message class allows to you specify a different set of reply-to addresses than the from field. The following demonstrates. Be sure to provide the method with an array of InternetAddress objects: import java.util.Properties;import javax.mail.*;import javax.mail.internet.*;

public class ReplyExample { public static void main (String args[]) throws Exception { String host = args[0]; String from = args[1]; String to = args[2]; String reply = args[3];







// Define message MimeMessage message = new MimeMessage(session); message.setFrom(new InternetAddress(from)); message.addRecipient(Message.RecipientType.TO, new InternetAddress(to)); message.setReplyTo(new InternetAddress[] {new InternetAddress(reply)}); message.setSubject("Hello JavaMail"); message.setText("Welcome to JavaMail");


How do I set/get the priority of a message?Location: http://www.jguru.com/faq/view.jsp?EID=100832 Created: Jul 12, 2000 Modified: 2000-07-12 19:38:23.819Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by Shashidhar Mudigonda (http://www.jguru.com/guru/viewbio.jsp?EID=100253

To set the header, you need to add an "X-Priority" header:

MimeMessage msg;...msg.addHeader("X-Priority", "1");To get the header, just ask for the header. Do notice that you get an array back.

MimeMessage msg;...String priority[] = msg.getHeader ("X-Priority");You can also ask with String getHeader(String name, String delimiter) if you want to treat them as a delimited list.

How can I make a Message object from a text file / input stream (in RFC-822 format)?Location: http://www.jguru.com/faq/view.jsp?EID=104131 Created: Jul 17, 2000 Modified: 2000-07-25 14:44:49.007Author: Eric Aubourg (http://www.jguru.com/guru/viewbio.jsp?EID=104119) Question originally posed by Alex Chaffee PREMIUM (http://www.jguru.com/guru/viewbio.jsp?EID=3

If your text file input stream is istr, just do:

javax.mail.internet.MimeMessage msg = new javax.mail.internet.MimeMessage(sess, istr);







where sess is a JavaMail session. If you need to create a session (for instance, you just want to parse the text file using Message methods):

class MyAuthenticator extends javax.mail.Authenticator {}javax.mail.Authenticator auth = new MyAuthenticator();java.util.Properties prop = new java.util.Properties();javax.mail.Session sess = javax.mail.Session.getInstance( prop, auth);

How long can a mail folder remain open?Location: http://www.jguru.com/faq/view.jsp?EID=104355 Created: Jul 17, 2000 Modified: 2000-07-25 14:45:16.643Author: Andrea Pompili (http://www.jguru.com/guru/viewbio.jsp?EID=51802) Question originally posed by Az Madu (http://www.jguru.com/guru/viewbio.jsp?EID=103536

It depends by the Mail Server's configuration.

JavaMail doesn't allow to handle this timeout value because all accesses to the Mail Server are made using a remote protocol as POP3 or IMAP.

These protocols could not control the timeout setting because this procedure changes from Mail Server to Mail Server...

So you need to control this parameter accessing directly to the Mail Server administration. To alert the user for session timeout you have to use a parameter inside your application initially set to the value of the Mail Server's timeout and decrease its value once per second until it reaches 0.

How do I use the JavaMail API to read newsgroups messages?Location: http://www.jguru.com/faq/view.jsp?EID=107152 Created: Jul 20, 2000 Modified: 2000-07-25 12:10:49.352Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by Francesco Marchioni (http://www.jguru.com/guru/viewbio.jsp?EID=59707

1. Get an NNTP provider. The only one I am aware of is the one provided from knife at http://www.dog.net.uk/knife/.

2. Place JAR file in CLASSPATH. It has a javamail.providers file already there so you don't need to edit/modify this.

3. When you get the store, get it as "nttp" 4. When you get the folder, get the newsgroup you want, like

"comp.lang.java.corba" 5. To get the list of messages in the folder, use folder.getMessages()

http://www.dog.net.uk/knife/







Thats basically about it. Treat the newsgroup messages as you would a mail message to read / deal with attachments.

The following program demonstrates:


public class GetNewsExample { public static void main (String args[]) throws Exception { String host = args[0]; String username = args[1]; String password = args[2]; String newsgroup = args[3];


// Get session Session session = Session.getInstance( props, null);

// Get the store Store store = session.getStore("nntp"); store.connect(host, username, password);

// Get folder Folder folder = store.getFolder(newsgroup); folder.open(Folder.READ_ONLY);



System.out.println( "Do you want to read message?" + " [YES to read/QUIT to end]"); String line = reader.readLine();

// Mark as deleted if appropriate if ("YES".equals(line)) { message[i].writeTo(System.out); } else if ("QUIT".equals(line)) { break; } }


How do I "forward" an email along with any attachments?Location: http://www.jguru.com/faq/view.jsp?EID=112681 Created: Jul 27, 2000 Modified: 2001-11-12 17:08:57.914Author: susanta panda (http://www.jguru.com/guru/viewbio.jsp?EID=112666) Question originally posed by Kam Bansal (http://www.jguru.com/guru/viewbio.jsp?EID=107942

Its very simple. All you need to do is:

1. Create a new MimeBodyPart object 2. Set the content of it as the attachment 3. Create a MimeMultipart object 4. Add The MimeBodyPart to the MimeMultipart object 5. Send it the usual way


I've tried attaching an email as you said, but I'm... Author: Erik Bielefeldt (http://www.jguru.com/guru/viewbio.jsp?EID=304539), Jan 17, 2001I've tried attaching an email as you said, but I'm having a few problems. Whenever I try to create a MimeBodyPart with the content set to the message to be forwarded, it interprets the forwarded messages headers as the MimeBodyPart's own. Here's an example: InternetHeaders ih = new InternetHeaders();ih.addHeader("Content-Type", "message/rfc822");ih.addHeader("Content-Disposition", "inline");MimeBodyPart mbp = new MimeBodyPart(ih,is);

Here, "is" is an input stream which contains the forwarded messages, as well as its headers. Unfortunately, these get whiped out by the MimeBodyPart's headers, so the original content-type and disposition of the forwarded message are lost. Hence, if the forwarded message was a mime multipart, it won't be parsed correctly upon receipt. I've tried every constructor there is and setting the content manually, but I always get




the same problem. Any help would be much appreciated. Thanks!

I guess I'll answer my own question for the benefit... Author: Erik Bielefeldt (http://www.jguru.com/guru/viewbio.jsp?EID=304539), Feb 12, 2001I guess I'll answer my own question for the benefit of anyone else who has come across the same problem. The trick seems to be to create the MimeBodyPart, set the needed headers, and then set the content using MimeBodyPart.setDataHandler(DataHandler dh). I created a StringBufDataSource specifically to handle this case. The parsing of headers in the MimeBodyPart constructors is really a poor API, and at least should be documented to let users know.

Re: I guess I'll answer my own question for the benefit... Author: Stefan Preuss (http://www.jguru.com/guru/viewbio.jsp?EID=508542), Oct 2, 2001I'll get mad about this. It have the same problem as you. Maybe you can give an example of your code. Thanx a lot. Stefan Preuß

Re: Re: I guess I'll answer my own question for the benefit... Author: Stefan Preuss (http://www.jguru.com/guru/viewbio.jsp?EID=508542), Oct 2, 2001After hours of testing :) I think I've found a solution:

messageBodyPart = new MimeBodyPart();DataHandler dh = new DataHandler(message, "message/rfc822");messageBodyPart.setDataHandler(dh);multipart.addBodyPart(messageBodyPart);message.setContent(multipart);

If you wan't to put another attachments into the mail it seems to be very import that the messaage/rfc-part is the last body-part in the message. Otherwise the displaying is corrupt.

Re: Re: Re: I guess I'll answer my own question for the benefit... Author: Ellen Katsnelson (http://www.jguru.com/guru/viewbio.jsp?EID=531891), Oct 27, 2001With a little correction it worked for me.

messageBodyPart = new MimeBodyPart();DataHandler dh = new DataHandler(originalMessage, "message/rfc822");messageBodyPart.setDataHandler(dh);multipart.addBodyPart(messageBodyPart);newMessage.setContent(multipart);

Also this is needed only in case the original message is not multipart. If it is

multipart I use:

newMessage.setContent((Multipart)originalMessage.getContent());

I'm having problems using JavaMail with the Microsoft Exchange Server. What do I have to do to fix this?Location: http://www.jguru.com/faq/view.jsp?EID=112788 Created: Jul 27, 2000 Modified: 2000-12-13 13:25:47.611Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by susanta panda (http://www.jguru.com/guru/viewbio.jsp?EID=112666

According to the Notes.txt file that comes with JavaMail:

4. We've received reports of IMAP authentication failures on the Microsoft Exchange Server 5.5, enterprise edition. This is due to a bug in the Microsoft server and the "Service Pack 1 for Exchange Server 5.5" apparently fixes this server bug. The service pack can be downloaded from the Microsoft website.

I want to use a port other than the default port for SMTP. Can I specify it in JavaMail? Location: http://www.jguru.com/faq/view.jsp?EID=116603 Created: Aug 1, 2000 Modified: 2000-08-01 21:02:09.463Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by Sudheer Divakaran (http://www.jguru.com/guru/viewbio.jsp?EID=106294

You can either set the "mail.smtp.port" property in the Properties you pass to the Session object, or specify the port when you connect in the transport: Transport smtp = Session.getTransport("smtp");smtp.connect(host, port, username, password);

When using JavaMail with the Java WebServer, I get an AccessControlException. How do I disable the security checks to permit this?Location: http://www.jguru.com/faq/view.jsp?EID=117574 Created: Aug 2, 2000 Modified: 2000-08-13 16:29:50.283Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

Assuming you really want to disable the security checks for ALL your servlets, you need to edit the server.properties file and set server.security=false.

How do you send a message such that the sender gets a return receipt when the recipient opens the email?Location: http://www.jguru.com/faq/view.jsp?EID=121033 Created: Aug 7, 2000 Modified: 2000-11-01 07:45:35.858Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by kj taimara (http://www.jguru.com/guru/viewbio.jsp?EID=120720












(Thankfully) This isn't part of the SMTP mail protocol. It also is not possible given the way e.g., security and mail relaying work. I.e., intermediate relays have no clue whether or not a particular mail address is real or not or just another forwarding alias or a mailing list or... And, any decent mail server won't tell you if the email address is real or not since that's a security hole. In terms of robustness, this return-receipt concept is silly, check out: ftp://koobera.math.uic.edu/www/proto/nrudt.txt for a more thorough explanation.

However, RFC 1891 does define a way to find out if the message was successfully delivered. See How do I receive an acknowledgement that a user has received my message? for information on its usage.

What does this messaging exception mean:javax.mail.NoSuchProviderException: No provider for Address type: rfc822

I am running a Weblogic on a Sun...Location: http://www.jguru.com/faq/view.jsp?EID=122151 Created: Aug 8, 2000 Modified: 2000-11-08 07:42:44.104Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by Jane Ng (http://www.jguru.com/guru/viewbio.jsp?EID=112489

According to Sun's JavaMail FAQ:

Usually this is because JavaMail can't access the configuration files in mail.jar, possibly because of a security permission problem; see this item for more details. Also, make sure that you haven't extracted the mail.jar contents; you should include the unmodified mail.jar file in the server's CLASSPATH.


Problem is with the JavaMail classes which are given... Author: Kishan A (http://www.jguru.com/guru/viewbio.jsp?EID=66106), Aug 9, 2000Problem is with the JavaMail classes which are given with Weblogic. To get around this problem, download the latest jar files(mail.jar and activation.jar) from here and put them in the classpath used by weblogic. Ensure that these jar files come before weblogicaux.jar file (which contains the JavaMail classes) in the classpath used to start Weblogic. This will solve the problem.

Re: Problem is with the JavaMail classes which are given... Author: Sharan RM (http://www.jguru.com/guru/viewbio.jsp?EID=395782), Apr 5, 2001Hello There, I prepended mail.jar,smtp.jar,activation.jar using d:\wlconfig.exe -classpath. Still I am getting the following error javax.mail.NoSuchProviderException: No Provider for Address Type: rfc822 I am using weblogic 5.1 without any service patches. The same code is working fine from a client. Heeeeeeeeelp meeeeeee. Thanks in advance. Sharan

Re: Re: Problem is with the JavaMail classes which are given...

http://java.sun.com/products/javamail

http://java.sun.com/products/javamail/FAQ.html#securityManager

http://java.sun.com/products/javamail/FAQ.html#servletSecurityManager






ftp://koobera.math.uic.edu/www/proto/nrudt.txt

Author: sachin Sahoo (http://www.jguru.com/guru/viewbio.jsp?EID=411391), May 1, 2001Hope the problem got solved for you by this time, otherwise try to set the Javaclasspath with the above mentioned jar files after you updated weblogic.policy file with the appropriate grant permissions. Hope this helps, -Sachin. [email protected]

Re: Re: Problem is with the JavaMail classes which are given... Author: ssk ssk (http://www.jguru.com/guru/viewbio.jsp?EID=415094), May 4, 2001you just set the PRE_CLASSPATH in startweblogic.cmd file. you must provide the classpath for all the related .jar file(activation.jar,mail.jar...). it will solve ur problem.

Re: Re: Re: Problem is with the JavaMail classes which are given... Author: Sverker Brundin (http://www.jguru.com/guru/viewbio.jsp?EID=472457), Aug 9, 2001I had this problem on Linux with Weblogic. The application worked fine on my Windows 2000 machine. When I compared the weblogic.jar files on both machines I noticed that the one on Linux missed the file javamail.default.providers. I added this to the weblogic.jar file on linux (has to be under the META-INF directory). I also had to update the mail.jar and activation.jar files and make weblogic to use these instead of the ones in weblogic.jar (by editing the classpath in startWebLogic.sh). Now everything works fine!

Re: Re: Re: Re: Problem is with the JavaMail classes which are given... Author: Sverker Brundin (http://www.jguru.com/guru/viewbio.jsp?EID=472457), Aug 9, 2001A better solution: Just add mail.jar to bea\wlserver6.0\lib and change the classpath so that mail.jar is loaded before weblogic.jar. (javamail.default.providers is included in mail.jar). Works for me anyway! ;)

Re[2]: Problem is with the JavaMail classes which are given... Author: Shilpi Goyal (http://www.jguru.com/guru/viewbio.jsp?EID=741110), Jan 30, 2002I have set the pre_classpath in startweblogic as well as the classpath in setenv.. still I get the same message if i try to send mail thru weblogic server. javax.mail.NoSuchProviderException: No provider for Address type: rfc822 My independent application(without weblogic server) works fine. Please tell me where to set the jar files' classpath???

Re[2]: Problem is with the JavaMail classes which are given... Author: Omindra Rana

(http://www.jguru.com/guru/viewbio.jsp?EID=1164665), Jun 1, 2004as u have included all files but meta-inf file. include this file where all files are resides ie in classpath. this must solve your problem

How do I set the mail.jar and activation.jar files... Author: Darbha Anuradha (http://www.jguru.com/guru/viewbio.jsp?EID=241011), Oct 31, 2000How do I set the mail.jar and activation.jar files in the server's CLASSPATH? In the System properties I put the mail.jar and activation.jar before WebLogic's path. Still it is giving NoSuchProviderException and is giving No Provider for rfc822. Please kindly send the solution.

Type this on the command prompt. d:\weblogic\bin\... Author: Kunal Jolly (http://www.jguru.com/guru/viewbio.jsp?EID=248487), Nov 7, 2000Type this on the command prompt.

d:\weblogic\bin\wlconfig.exe -classpath d:\weblogic\classes\mail.jar;d:\weblogic\classes\activation.jar

Be sure to use the proper drive

Re: Type this on the command prompt. d:\weblogic\bin\... Author: Shelli Byers (http://www.jguru.com/guru/viewbio.jsp?EID=720848), Jan 15, 2002A solution I have just found is updating the set PRE_CLASSPATH in StartWeblogic.cmd, then upating the set CLASSPATH to include the PRE_CLASSPATH. This is how I finally got it to work.

Re[2]: Type this on the command prompt. d:\weblogic\bin\... Author: Bhavesh Vakil (http://www.jguru.com/guru/viewbio.jsp?EID=1066016), Mar 14, 2003Hi, I have similar problem, my hosting provider is not providing JAR file support. Due to this limitation I have to extract JAR file content (mail.jar) and (activation.jar). I upload extracted content. I apply all suggestion mention above, but No luck. It's working my development PC, but not working at hosting site. Bhavesh www.ResMe.com

Re[3]: Type this on the command prompt. d:\weblogic\bin\... Author: Shabeer Ibrahim (http://www.jguru.com/guru/viewbio.jsp?EID=1078909), Apr 24, 2003Hi , If you have done all the classpath settings try the following . You might not be instantiating a Transport. ie You may be using the default transport. try the following code before calling the send method: Transport transport = session.getTransport(address[0]); transport.send(msg); Shabeer

http://www.ResMe.com/

don't worry Author: Omindra Rana (http://www.jguru.com/guru/viewbio.jsp?EID=1164665), Jun 1, 2004include mail.jar,activation.jar,smtp.jar and other mail jar files in your classpath with meta-inf file

Where can I get an IMAP mail server for testing purposes?Location: http://www.jguru.com/faq/view.jsp?EID=123063 Created: Aug 9, 2000 Modified: 2000-08-09 12:01:27.293Author: Gerre Gannaway (http://www.jguru.com/guru/viewbio.jsp?EID=123060) Question originally posed by Muhammad Qureshi (http://www.jguru.com/guru/viewbio.jsp?EID=87763

The following URL contains a long list of mail servers(with descriptions and links) from http://www.davecentral.com/mailserv.html.

How can I use the mailto: protocol from URL or URLConnection?Location: http://www.jguru.com/faq/view.jsp?EID=126822 Created: Aug 14, 2000 Modified: 2000-09-01 13:28:32.946Author: Tim Rohaly (http://www.jguru.com/guru/viewbio.jsp?EID=10) Question originally posed by Tim Rohaly PREMIUM (http://www.jguru.com/guru/viewbio.jsp?EID=10

Both URL and URLConnection act as mail user agents when using the mailto: protocol. They need to connect to a mail transfer agent to effect delivery. An MTA, for example sendmail, handles delivery and forwarding of e-mail.

Note that a mailto: URL doesn't contain any information about where this MTA is located - you need to specify it explicitly by setting a Java system property on the command line. For example, to run the program mailto.java shown below, you would use the command:

java -Dmail.host=mail.yourisp.net mailtoThis tells the mailto: protocol handler to open a socket to port 25 of mail.yourisp.net and speak SMTP to it. You should of course substitute the name of your own SMTP server in the above command line. import java.io.*;import java.net.*;

public class mailto {

public static void main(String[] args) { try { URL url = new URL("mailto:[email protected]"); URLConnection conn = url.openConnection(); PrintStream out = new PrintStream(conn.getOutputStream(), true);

out.print(




http://www.davecentral.com/mailserv.html




"From: [email protected]"+"\r\n"); out.print( "Subject: Works Great!"+"\r\n"); out.print( "Thanks for the example - it works great!"+"\r\n"); out.close(); System.out.println("Message Sent"); } catch (IOException e) { System.out.println("Send Failed"); e.printStackTrace(); } }}

What's the difference between an MUA and an MTA?Location: http://www.jguru.com/faq/view.jsp?EID=126826 Created: Aug 14, 2000 Modified: 2000-08-14 22:55:09.941Author: Tim Rohaly (http://www.jguru.com/guru/viewbio.jsp?EID=10)

An MUA is a mail user agent - this is a program that allows a user to read, compose, and send e-mail. Examples of MUAs are Eudora, pine, Netscape Mail, and Microsoft Outlook. If your program uses the JavaMail API to send e-mail, it is acting as an MUA.

There are typically multiple applications on each computer that can act as an MUA; each user typically runs an MUA directly. You can think of an MUA as an e-mail client.

An MTA is a mail transfer agent - this is a program that is responsible for the transport, delivery, and forwarding of e-mail. SMTP servers like sendmail are MTAs.

There will typically be at most one MTA on a machine. More likely, a large number of users will use the same MTA. For example, you probably send e-mail using your ISP's SMTP server. The ISPs MTA will be shared by all of that ISP's customers. You can think of an MTA as an e-mail server.

How do I find out the SMTP server of the recipient of a message?Location: http://www.jguru.com/faq/view.jsp?EID=128496 Created: Aug 16, 2000 Modified: 2000-08-16 13:46:41.243Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

Like when sending email through Eudora or Outlook, the only SMTP server you specify is your own. It is the responsibility of the SMTP server to figure out how the email message will get from here to there for each recipient.

If your mail server requires authentication before sending a message, see another question about relaying.

How do I limit the parts of a message I get? I'd like to avoid fetching attachments until a user wants it.Location: http://www.jguru.com/faq/view.jsp?EID=130491 Created: Aug 19, 2000 Modified: 2000-08-20 10:09:44.73Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)








The JavaMail API supports a FetchProfile that allows you to limit the contents retrieved. The FetchProfile.Item class specifies three pre-defined items that can be fetched: ENVELOPE, FLAGS, and/or CONTENT_INFO. For instance, if all you want is the From, To, Subject, and Date (or message Envelope info), you could do something like the following: Messages msgs[] = folder.getMessages();FetchProfile profile = new FetchProfile();profile.add(FetchProfile.Item.ENVELOPE);folder.fetch(msgs, profile);You can also add specific headers to the fetch profile with: profile.add("X-mailer");

Where can I find a list of the different properties that the JavaMail API uses?Location: http://www.jguru.com/faq/view.jsp?EID=131682 Created: Aug 21, 2000 Modified: 2002-03-21 17:13:14.978Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

Appendix A of the JavaMail specification includes the standard set. Each provider may support additional properties that are specific to that provider. For instance, in the Notes.txt file that comes with JavaMail, you can find an additional list that the Sun IMAP/SMTP providers supports.

Is there a way to send mail using Lotus Notes mail server in Java with JavaMail or any other API?Location: http://www.jguru.com/faq/view.jsp?EID=132324 Created: Aug 22, 2000 Modified: 2000-08-22 14:02:27.567Author: Animikh Sen (http://www.jguru.com/guru/viewbio.jsp?EID=110646) Question originally posed by sharad gupta (http://www.jguru.com/guru/viewbio.jsp?EID=100198

You can turn on the SMTP service in the Notes server to send mail.You can also create a IMAP mailBox and turn on the IMAP service in Notes (I think only in 4.6 + versions) and read from there using JavaMail.

How do I use a ConnectionListener/ConnectionEvent to know when a connection is opened?Location: http://www.jguru.com/faq/view.jsp?EID=132573 Created: Aug 22, 2000 Modified: 2000-08-28 07:33:23.834Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by Ulises D Estecche I. (http://www.jguru.com/guru/viewbio.jsp?EID=127207

To find out when a connection is opened, attach the ConnectionListener to the Transport you are using to open the connetion. This means you can't use the static Transport.send() method, as you don't have access to the specific Transport you are using. Instead, you need to get the specific transport, and then attach the listener. This is demonstrated in the following example. import java.util.Properties;import javax.mail.*;import javax.mail.event.*;







http://java.sun.com/products/javamail/NOTES.txt

http://java.sun.com/products/javamail/JavaMail-1.2.pdf



import javax.mail.internet.*;

public class ConnectionExampleListener { public static void main (String args[]) throws Exception { String host = args[0]; String from = args[1]; String to = args[2];





// Define transport Transport transport = session.getTransport("smtp"); ConnectionListener listener = new ConnectionListener() { public void opened(ConnectionEvent e) { System.out.println("Opened"); } public void disconnected(ConnectionEvent e) { System.out.println("Disconnected"); } public void closed(ConnectionEvent e) { System.out.println("Closed"); } }; transport.addConnectionListener(listener); transport.connect(host, "", ""); transport.sendMessage(message, message.getAllRecipients()); transport.close();

Thread.sleep(1000); }}

How do I use JavaMail API to send multipart/alternative mails? I want to send an html-mail, but if the recipiant dont know how to parse them, they will see a text/plain version.Location: http://www.jguru.com/faq/view.jsp?EID=132654 Created: Aug 23, 2000 Modified: 2001-11-12 17:07:21.276Author: Andrea Pompili (http://www.jguru.com/guru/viewbio.jsp?EID=51802) Question originally posed by Stefan Mellberg (http://www.jguru.com/guru/viewbio.jsp?EID=127183

You have to build the message using a MimeMultipart object as content.If you have attachments you have to set the first part of the message with a MimeMultipart object .

To build a multipart/alternative object with a plain content and an html one follow this code: String plain_text = ... ;String html_text = ... ;MimeMultipart content = new MimeMultipart("alternative");MimeBodyPart text = new MimeBodyPart();MimeBodyPart html = new MimeBodyPart();text.setText(plain_text);html.setContent(html_text, "text/html");content.addBodyPart(text);content.addBodyPart(html);To parse a message with a content multipart/alternative you have to use the MimeMultipart class and then choose from the parts inside the one you prefer according to its content type.Comments and alternative answers

Example Code Doesn't Work Author: David Rosner (http://www.jguru.com/guru/viewbio.jsp?EID=439252), Jun 14, 2001I tried the following code and the resulting message displayed both the text and the html within the email body. In addition looking at the mail headers it doesn't look like my mail client is recognizing the message as a MimeMultipart.

Thoughts as to why?

MimeMultipart content = new MimeMultipart("alternative");MimeBodyPart text = new MimeBodyPart();MimeBodyPart html = new MimeBodyPart();text.setText( this.strBody );html.setContent(this.strHTMLBody, "text/html");




content.addBodyPart(text);content.addBodyPart(html);message.setContent( content );

Re: Example Code Doesn't Work Author: Jin Bal (http://www.jguru.com/guru/viewbio.jsp?EID=516078), Nov 5, 2001I am having exactly the same problem. What seems to be happening is that the header is not being changed from text/plain by the setContent(Multipart) method, so that when the client reads it it thinks that it is text. I have no solution to this currently and I've been trawling the mail archives for a fix - somebody please help!!

Re: Re: Example Code Doesn't Work Author: david rosner (http://www.jguru.com/guru/viewbio.jsp?EID=539421), Nov 5, 2001Hi, Don't know why the following works, but it does. It appears that there is either a bug in the JavaMail implementation, or its a typo in the docs. Here is the code that I used to mail HTML and Text multipart emails:

MimeMultipart content = new MimeMultipart("alternative");MimeBodyPart text = new MimeBodyPart();MimeBodyPart html = new MimeBodyPart(); text.setText( oMail.getStrBody() );text.setHeader("MIME-Version" , "1.0" );text.setHeader("Content-Type" , text.getContentType() ); html.setContent(oMail.getStrHTMLBody(), "text/html");html.setHeader("MIME-Version" , "1.0" );html.setHeader("Content-Type" , html.getContentType() );

content.addBodyPart(text);content.addBodyPart(html); message.setContent( content );message.setHeader("MIME-Version" , "1.0" );message.setHeader("Content-Type" , content.getContentType() );message.setHeader("X-Mailer", "Recommend-It Mailer V2.03c02");message.setSentDate(new Date());

About sending Multipart text and html mail. Author: Kevin Russell (http://www.jguru.com/guru/viewbio.jsp?EID=896483), Sep 18, 2002Is it possible to either post a code example that does 2 things, is clear to understand and actually works. The examples provided do not clearly define what happens where and when. This looks like something Microsoft would post as an answer to a question.

Re: About sending Multipart text and html mail. Author: Kevin Bridges (http://www.jguru.com/guru/viewbio.jsp?EID=1119238), Oct 2, 2003

I found that the above was useless for me as well. Here is what I needed to do to send a multi-part text/html email. You may need to edit the line: props.put("mail.smtp.host", "localhost");

You will need to edit the from and to emails.

// Create the message to send Properties props = new Properties(); props.put("mail.smtp.host", "localhost"); Session session = Session.getInstance(props,null); MimeMessage message = new MimeMessage(session);

// Create the email addresses involved InternetAddress from = new InternetAddress("[email protected]"); InternetAddress to = new InternetAddress("[email protected]");

// Fill in header message.setSubject("I am a multipart text/html email" ); message.setFrom(from); message.addRecipient(Message.RecipientType.TO, to);

// Create a multi-part to combine the parts Multipart multipart = new MimeMultipart();

// Create your text message part BodyPart messageBodyPart = new MimeBodyPart(); messageBodyPart.setText("Here is your plain text message");

// Add the text part to the multipart multipart.addBodyPart(messageBodyPart);

// Create the html part messageBodyPart = new MimeBodyPart(); String htmlText = "<H1>I am the html part</H1>"; messageBodyPart.setContent(htmlText, "text/html");

// Add html part to multi part multipart.addBodyPart(messageBodyPart);

// Associate multi-part with message message.setContent(multipart);

// Send message Transport.send(message);

Re[2]: About sending Multipart text and html mail. Author: Brendan Richards (http://www.jguru.com/guru/viewbio.jsp?EID=1148403), Feb 23, 2004I had just one problem with this code:

It correctly setup two message parts, one text and one html but it gave the main message a mime type of multipart/mixed.This resulted in it being displayed as a plain text email with the HTML body attached as a HTML file.

I corrected it by setting the main mime type to multipart/alternavive by replacing this line:Multipart multipart = new MimeMultipart();

to read:

Multipart multipart = new MimeMultipart("alternative");

This then worked as expected with only one of the body parts being displayed on the client.

Re[3]: About sending Multipart text and html mail. Author: Asish Law (http://www.jguru.com/guru/viewbio.jsp?EID=1152755), Mar 9, 2004I am having some problems getting "alternative" to work. Here is the section of my code that creates the content (no attachments): MimeMessage message = new MimeMessage(session);

// Create a multi-part to combine the parts MimeMultipart multipart = new MimeMultipart("alternative");

// Create text message part MimeBodyPart messageBodyPart = new MimeBodyPart(); messageBodyPart.setText(textBody); multipart.addBodyPart(messageBodyPart);

// Create html part messageBodyPart = new MimeBodyPart(); messageBodyPart.setContent(htmlBody, "text/html"); multipart.addBodyPart(messageBodyPart);

// Associate multi-part with message

message.setContent(multipart); message.saveChanges();

The above works great for browsers/servers that support html content. Internet services that don't support the used character set give the following error. I've seen postings mentioning this error, and have tried to follow the suggestions. Not sure what I am missing in the code above. Also, if I change "alternative" to "mixed", both (html and text) browsers receive text email with html as an attachment (as pointed out in an earlier message in this thread). Thanks for any help that you can provide.

This message uses a character set that is not supported by the Internet Service. To view the original message content, open the attached message. If the text doesn't display correctly, save the attachment to disk, and then open it using a viewer that can display the original character set. <<message.txt>>

Where can I find the API documentation for JavaMail?Location: http://www.jguru.com/faq/view.jsp?EID=134140 Created: Aug 24, 2000 Modified: 2000-08-24 12:32:55.142Author: John Mitchell (http://www.jguru.com/guru/viewbio.jsp?EID=4)

The JavaMail API documentation is available from Sun's J2EE API documentation page.

Does FetchProfile work with POP providers or only IMAP?Location: http://www.jguru.com/faq/view.jsp?EID=134639 Created: Aug 24, 2000 Modified: 2000-08-27 07:56:43.49Author: Andrea Pompili (http://www.jguru.com/guru/viewbio.jsp?EID=51802) Question originally posed by John Zukowski PREMIUM (http://www.jguru.com/guru/viewbio.jsp?EID=7

Yes, but the FetchItems that work are javax.mail.FetchProfile.Item.ENVELOPE and javax.mail.UIDFolder.FetchProfileItem.UID.This behaviour is for version 1.1.1 of the POP3 provider given by Sun, providers from others may or may not.

How do I implement a mail server using Java?Location: http://www.jguru.com/faq/view.jsp?EID=134946 Created: Aug 25, 2000 Modified: 2003-02-25 21:57:22.46Author: Serge Knystautas (http://www.jguru.com/guru/viewbio.jsp?EID=100012) Question originally posed by Savio D'Souza (http://www.jguru.com/guru/viewbio.jsp?EID=110887

Check out the JAMES project at http://james.apache.org/. It is an open source 100% Java implementation of a mail server (SMTP/POP3 for now with TLS support... IMAP4, LDAP integration, other features coming).

http://james.apache.org/







http://java.sun.com/j2ee/j2sdkee/techdocs/api/index.html



FAQ Manager note: If you are truly interested in writing your own server, basically you'll need to read up on the different RFCs for the different protocols like SMTP, POP3, IMAP, attachments, etc. To start, http://cr.yp.to/smtp.html offers a great place to learn about SMTP.Comments and alternative answers

IMAP4 Server SDK by GoodServer Author: David Rauschenbach (http://www.jguru.com/guru/viewbio.jsp?EID=486029), Aug 28, 2001GoodServer offers commmercial server SDK's for creating your own IMAP4, POP3 or SMTP servers. http://www.goodserver.com

Are there any resources to help someone create a service provider? Either for my own protocol or creating my own POP3/IMAP/SMTP provider.Location: http://www.jguru.com/faq/view.jsp?EID=135882 Created: Aug 27, 2000 Modified: 2000-08-27 07:54:29.706Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by John Zukowski PREMIUM (http://www.jguru.com/guru/viewbio.jsp?EID=7

Sun offers a roughly 40 page Service Provider Guide to help you create a provider. You can get either the PDF or PostScript version of the file.

How can I find out what messages are marked for deletion (the expunge action)?Location: http://www.jguru.com/faq/view.jsp?EID=136460 Created: Aug 28, 2000 Modified: 2000-08-28 07:29:29.361Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by Sampat Jena (http://www.jguru.com/guru/viewbio.jsp?EID=136186

You need to attach a MessageChangedListener to the folder. Then, in the messageChanged() method, you can find out if/when the flags changed. You'll have to check specifically if the deleted flag is set, or assuming that's the only one you are changing, you don't. The following listener is basically what you need: // Attach listenerMessageChangedListener listener = new MessageChangedListener() { public void messageChanged(MessageChangedEvent e) { try { Message m = e.getMessage(); System.out.println("Flagged: " + m.getSubject()); int type = e.getMessageChangeType(); System.out.println("\tFlags Changed? " + (type == MessageChangedEvent.FLAGS_CHANGED)); } catch (MessagingException me) { System.out.println("Oops: " + me); } }




ftp://ftp.java.sun.com/docs/javamail/Providers.ps

ftp://ftp.java.sun.com/docs/javamail/Providers.pdf




http://www.goodserver.com/

http://cr.yp.to/smtp.html

};folder.addMessageChangedListener(listener);Comments and alternative answers

You can use the following satements to find the message... Author: v sirisha (http://www.jguru.com/guru/viewbio.jsp?EID=106368), Aug 30, 2000You can use the following satements to find the message marked for deletion. msg=folder.getMessage(msgNum); if (msg.isSet(Flags.Flag.DELETED)) {}

I am a little confused about the differences, advantages, and disadvantages of using JavaMail, JMS, and James Apache. Could someone please help me by clarifying these to decide which is the best solution to implement? Location: http://www.jguru.com/faq/view.jsp?EID=136666 Created: Aug 28, 2000 Modified: 2000-08-28 12:07:35.052Author: Jerry Smith (http://www.jguru.com/guru/viewbio.jsp?EID=9) Question originally posed by Armando Noval (http://www.jguru.com/guru/viewbio.jsp?EID=136009

The JavaMail API is a mail user agent (MUA) for creating programs for a user to get/send email messages, using standard mail protocols.

James (and others) is a mail server / mail transfer agent (MTA). It is responsible for the actual sending and delivery of mail messages, as well as queueing messages when something is down, holding them for the user to receive, etc.

The Java Message Service (JMS) is a Java API for interclient messaging. JMS provides a general-purpose facility for sending messages among distributed application components. It does not provide email functionality.

When getting mail with a large attachment JavaMail tries to download the attachment when getCount() is called on the multipart. Is there a way to avoid downloading the attachment if it isn't needed?Location: http://www.jguru.com/faq/view.jsp?EID=138349 Created: Aug 30, 2000 Modified: 2001-11-12 17:08:14.716Author: Serge Knystautas (http://www.jguru.com/guru/viewbio.jsp?EID=100012) Question originally posed by Manmohan Garg (http://www.jguru.com/guru/viewbio.jsp?EID=106106

The MIME specification does not include meta data on the number of sections or any information on each section, so the only way to know the number of sections in a message is to download the whole message and count each part.

FAQ Manager Note: If you'd like to avoid downloading the attachments altogether, you can use a FetchProfile.








How can I implement automail responders using the JavaMail API?Location: http://www.jguru.com/faq/view.jsp?EID=138355 Created: Aug 30, 2000 Modified: 2000-08-30 08:50:24.582Author: Serge Knystautas (http://www.jguru.com/guru/viewbio.jsp?EID=100012) Question originally posed by vamshi krishna (http://www.jguru.com/guru/viewbio.jsp?EID=16658

You could create a FolderListener object and listen for new messages, create a new message as a reply, and send it out using the JavaMail API. However, this approach requires you to keep a connection open to your IMAP account at all times, and would not work with a POP account as you can only have one connection at a time with a POP account.

You might want to check out JAMES, an all Java implementation of an SMTP and POP3 server (IMAP coming) that offers a mailet API. Mailets allow you to process incoming mail messages and do tasks such as autorespond to incoming messages.

To write a program that automatically responds to email, is it best to use an MUA approach (like JavaMail API) or to do something with the mail server (MTA)?Location: http://www.jguru.com/faq/view.jsp?EID=138358 Created: Aug 30, 2000 Modified: 2000-08-30 08:40:21.02Author: Serge Knystautas (http://www.jguru.com/guru/viewbio.jsp?EID=100012) Question originally posed by Muhammad Qureshi (http://www.jguru.com/guru/viewbio.jsp?EID=87763

I think the MTA approach works better as it is more reliable. You can channel all messages through your MTA and fire actions accordingly. With the MUA approach, you consume network resources by keeping connections open and risk failure if the connection is temporarily down. With the MTA approach, if your MTA goes down, the messages will queue in the previous hop until your system is restored, and you only use a connection when a message is actually transfered.

How do I send out mail using the JavaMail API without using an SMTP host provider?Location: http://www.jguru.com/faq/view.jsp?EID=138360 Created: Aug 30, 2000 Modified: 2000-08-30 08:38:57.931Author: Serge Knystautas (http://www.jguru.com/guru/viewbio.jsp?EID=100012) Question originally posed by Kian Hui Teo (http://www.jguru.com/guru/viewbio.jsp?EID=64456

You cannot send out mail without any knowledge of who is receiving it. In JavaMail if you do not explicitly specify the outbound mail server, it will assume localhost. If you want to avoid using a single SMTP host provider to send outgoing messages, you can use a DNS library package (such as http://www.xbill.org/dnsjava/) to query the MX records of the recipients of their message, and send the mail directly to their server.

What is James?Location: http://www.jguru.com/faq/view.jsp?EID=141585 Created: Sep 4, 2000 Modified: 2000-10-09 21:20:39.026Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)










http://java.apache.org/james/




James stands for Java Apache Mail Enterprise Server. It is part of the Apache effort. As the acronym expansion may show, it is a mail server, written in Java. It supports extending the mail server by creating little programs called mailets.

What is a mailet?Location: http://www.jguru.com/faq/view.jsp?EID=141586 Created: Sep 4, 2000 Modified: 2003-02-25 21:57:50.641Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

A mailet is a Java program that extends Apache's James mail server. Think of it as a servlet, but for a mail server, where you can easily extend the capabilities with functionality like auto-responders.

Where can I find help for how to setup and use James?Location: http://www.jguru.com/faq/view.jsp?EID=141588 Created: Sep 4, 2000 Modified: 2000-09-04 10:42:55.499Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by Carfield Yim (http://www.jguru.com/guru/viewbio.jsp?EID=4648

There really isn't much documentation on James yet. The only documentation Apache makes available at the moment is a single page. You can try searching the James mail archives, though its mostly for developers or try to submit something to Sun's JavaMail mailing list.

There is a topic in this FAQ on James, but the content is a little slim. Hopefully, it will build up over time.


See this article at JavaWorld Author: Ramon Gonzalez (http://www.jguru.com/guru/viewbio.jsp?EID=728508), May 29, 2002There is an article at Javaworld that describes how to use Apache James. Look at http://www.javaworld.com/javaworld/jw-10-2001/jw-1026-jamesmail.html

James is based on something called Avalon. What is Avalon?Location: http://www.jguru.com/faq/view.jsp?EID=141600 Created: Sep 4, 2000 Modified: 2002-03-30 19:43:10.647Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

Avalon is the Java Apache Server Framework. According to its description: The Java Apache Server Framework project is an effort to create, design, develop and maintain a common framework for server applications written using the Java language.

Where can I get the James mailet API docs?Location: http://www.jguru.com/faq/view.jsp?EID=141670 Created: Sep 4, 2000 Modified: 2003-02-25 21:56:34.986Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)



http://jakarta.apache.org/avalon/



http://www.javaworld.com/javaworld/jw-10-2001/jw-1026-jamesmail.html

http://www.jguru.com/jguru/faq/faqindex.jsp?faq=JavaMail&title=Java%3AAPI%3AJavaMail%3AProducts%3AJames&topic=141576


http://list.working-dogs.com/lists/james/

http://java.apache.org/james/




http://james.apache.org/



http://java.apache.org/

The javadocs for the mailet API are available from http://james.apache.org/mailet/index.html.

How do I query a DNS server for the MX (or other) records it holds on a domain?Location: http://www.jguru.com/faq/view.jsp?EID=200612 Created: Sep 7, 2000 Modified: 2001-06-26 13:30:36.88Author: Tim Rohaly (http://www.jguru.com/guru/viewbio.jsp?EID=10) Question originally posed by Monty Dickerson (http://www.jguru.com/guru/viewbio.jsp?EID=141678

The DNS protocol is described in RFC 1035 (http://www.faqs.org/rfcs/rfc1035.html), with clarifications in RFC 2181 (http://www.faqs.org/rfcs/rfc2181.html).

Operating system libraries usually provide a way to find out the A records, e.g. gethostbyname() - this same functionality is in the java.net.InetAddress class in Java via getByName() and related methods. I've never encountered a system function to get the MX records, and the same is true in Java. To find the MX records you will need to open a socket to the DNS server and form a proper query. Refer to the above RFCs for details of the protocol.


Instead of brewing your own DNS library from scratch,... Author: Serge Knystautas (http://www.jguru.com/guru/viewbio.jsp?EID=100012), Sep 8, 2000Instead of brewing your own DNS library from scratch, I would suggest you use existing DNS libraries. A mature open source Java implementation of the DNS protocol is available at http://www.xbill.org/dnsjava/. JavaSoft has also come out with an early implementation of using DNS through JNDI, which should support MX record lookups. This is available at http://developer.java.sun.com/developer/earlyAccess/jndi/.

See also the code from Java Network Programming, 2nd... Author: Monty Dickerson (http://www.jguru.com/guru/viewbio.jsp?EID=141678), Nov 13, 2000

See also the code from Java Network Programming, 2nd edition found at http://www.manning.com/Hughes/index.html.

Check website http://www.xbill.org/dnsjava and the download the jar file. You can get all you need. Author: Ken Tan (http://www.jguru.com/guru/viewbio.jsp?EID=1024686), Nov 12, 2002For example, for email [email protected], throuth the provided function in the package, you can find mx1.mail.yahoo.com, mx2.mail.yahoo.com, mx4.mail.yahoo.com are the mail servers for your javamail. That's it.

http://www.manning.com/Hughes/index.html

http://developer.java.sun.com/developer/earlyAccess/jndi/







http://james.apache.org/mailet/index.html

Where can I find a detailed code example of sending non-ASCII messages (Japanese in my case)? Location: http://www.jguru.com/faq/view.jsp?EID=200627 Created: Sep 7, 2000 Modified: 2000-09-07 19:32:36.94Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by mike claiborne (http://www.jguru.com/guru/viewbio.jsp?EID=136752

You need to be sure to set the character set when you set the content. The following example demonstrates. The message content is the numbers from 1-10.

import java.util.Properties;import javax.mail.*;import javax.mail.internet.*;import javax.activation.*;

public class SendJIS { public static void main (String args[]) throws Exception { String host = args[0]; String from = args[1]; String to = args[2];




// Define message MimeMessage message = new MimeMessage(session); message.setFrom(new InternetAddress(from)); message.addRecipient(Message.RecipientType.TO, new InternetAddress(to)); message.setSubject("Hello JIS JavaMail");

String jisText = "\u4E00\u4E8C\u4E09\u56DB\u4E94\u516D\u4E03\u516B\u4E5D\u5341";

message.setContent(jisText, "text/plain; charset=JIS");





For some reason this only displays 1-6 okay as far as the content. I don't know why 7-10 is messed up. As I don't use Japanese that much, it could be my configuration.Comments and alternative answers

Thanks a lot! This still leaves several unanswered... Author: mike claiborne (http://www.jguru.com/guru/viewbio.jsp?EID=136752), Sep 7, 2000Thanks a lot! This still leaves several unanswered questions. 1. According to the JavaMail docs, in order to use MimeMessage.setContent(Object o, String s), the parm o should be a DataHandler object and there should be a DataContentHandler in the environment which is able to handle that type 2. Which RFC determines "charset=JIS" (I may need to encode differently for my target client) 3. Per RFC 821 & 822 , all content in an e-mail should be encoded into ascii. When I ran your code, it sent out chars outside this range.

I got the character set encoding list from http://... Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7), Sep 7, 2000I got the character set encoding list from http://java.sun.com/j2se/1.3/docs/guide/intl/encoding.doc.html. Regarding the rest of your comments, I'm not sure. I just played around until I got something to work (showing Japanese characters in my email program, at the receiving end).

Re: I got the character set encoding list from http://... Author: Mukund Ramadoss (http://www.jguru.com/guru/viewbio.jsp?EID=820071), Apr 1, 2002John, We are having an UTF-8 database and all our HTML form data are UTF-8 encoded.All our clients are under SOLARIS environment.When we use JavaMail to send email, the dtmail in Solaris displays only when we login to Solaris in Unicode language/locale. When we login with EUCJP or ShijtJis, we are seeing only junk in dtmail. I tried with Contenttype set as ISO-2022-jp, JIS, etc but to no avail.Should I do any conversion before doing a setContent?Will appreciate your help.

Regards Mukund

1>try -------------------------------------- String... Author: marx0207 wang (http://www.jguru.com/guru/viewbio.jsp?EID=268565), Dec 4, 20001>try --------------------------------------String myMsg="hi,MyAnswer";MimeMessage msg=new MimeMessage();msg.setText(myMsg,"JIS");

http://java.sun.com/j2se/1.3/docs/guide/intl/encoding.doc.html

--------------------------------------

2>If your enviroment is Japanese Default Charset, you could use --------------------------------------String DefaultCharset= MimeUtility.getDefaultJavaCharset(); String myMsg="hi,MyAnswer";MimeMessage msg=new MimeMessage();msg.setText(myMsg,DefaultCharset);

Both method succeed in my case: I sent Big5- charset message to myself notice: (You Have to set the message type to 'MimeMessage' otherwise you can't find the method)

I have tried with my application .... Author: Mustafa D (http://www.jguru.com/guru/viewbio.jsp?EID=921024), Jul 7, 2002Hi,

I am following the same procedure as you have mentioned in your code snippet of setting the charset to a particular language type. In my situation I want to send text in arabic. So I have used the following syntax:msg.setText(msgSend, "Windows-1256"); But I am not able to view the contents at the target address in arabic.So what could be the possible error. Please advice.Thanking you.

With Kind Regards,Mustafa D.

Re: I have tried with my application .... Author: Ravi Ramachandra (http://www.jguru.com/guru/viewbio.jsp?EID=1144339), Feb 7, 2004Hi, We are also facing similar problem in Arabic. We are using javamail for composing and sending arabic messsags. We will appreciate if anybody could send us code snippet for arabic messages. Thanks a lot in advance. Ravi

How can I get a list of newsgroups on my NNTP server?Location: http://www.jguru.com/faq/view.jsp?EID=205467 Created: Sep 13, 2000 Modified: 2000-09-13 22:04:39.359Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

The non-standard sun.net.nntp.NntpClient class lets you get this information. import sun.net.nntp.*;import java.io.*;

public class ListGroups { public static void main(String args[]) throws Exception { String server = args[0]; NntpClient nc = new NntpClient(server); String line; nc.serverOutput.println("list newsgroups"); BufferedReader br =



new BufferedReader( new InputStreamReader(nc.serverInput)); while ((line = br.readLine()) != null) { if (line.equals(".")) break; System.out.println(line); } nc.askServer("QUIT"); nc.closeServer(); }}

Where can I get the JavaMail example programs from Elliotte Rusty Harold's 2nd edition of Java Network Programming?Location: http://www.jguru.com/faq/view.jsp?EID=205473 Created: Sep 13, 2000 Modified: 2000-09-13 22:13:16.916Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

The last chapter of Elliotte's book covers JavaMail. You can get the examples from http://www.ibiblio.org/javafaq/books/jnp2e/examples/19/.

What causes a "AXX NO Mailbox name is invalid" MessagingException?Location: http://www.jguru.com/faq/view.jsp?EID=206226 Created: Sep 14, 2000 Modified: 2000-09-14 18:11:09.717Author: Josephine Zhao (http://www.jguru.com/guru/viewbio.jsp?EID=202695) Question originally posed by Josephine Zhao (http://www.jguru.com/guru/viewbio.jsp?EID=202695

Make sure the getFolder() call has a valid/complete IMAP folder name.

The A part of the response is a counter for commands executed, that is why that number changes.

What do all of the different abbreviations and acronyms (i.e., der, p7b, p12/pfx, etc.) associated with S/MIME actually mean? Location: http://www.jguru.com/faq/view.jsp?EID=211514 Created: Sep 20, 2000 Modified: 2000-09-20 19:12:04.721Author: John Mitchell (http://www.jguru.com/guru/viewbio.jsp?EID=4) Question originally posed by Evan Owens (http://www.jguru.com/guru/viewbio.jsp?EID=123877

The canonical place to learn about S/MIME is directly from the IETF RFCs themselves. S/MIME version 2 is in S/MIME Version 2 Message Specification and S/MIME Version 2 Certificate Handling. S/MIME version 3 is in S/MIME Version 3 Certificate Handling, S/MIME Version 3 Message Specification, and Enhanced Security Services for S/MIME.

How do I get a raw input stream of the message content?Location: http://www.jguru.com/faq/view.jsp?EID=214065 Created: Sep 23, 2000 Modified: 2002-03-30 19:45:09.009Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)



http://www.ietf.org/rfc/rfc2634













http://www.ibiblio.org/javafaq/books/jnp2e/examples/19/



The getInputStream() method returns the content based upon the Content-Transfer-Encoding header. Prior to the 1.2 API, there was no easy way to get the raw content. The 1.2 version of the API introduces the getRawInputStream() method to get the raw form of the content from the MimeMessage or MimeBodyPart class.

Where do I get a list of the JavaMail 1.2 API changes?Location: http://www.jguru.com/faq/view.jsp?EID=214067 Created: Sep 23, 2000 Modified: 2000-09-23 21:00:09.946Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

The http://java.sun.com/products/javamail/JavaMail-1.2-changes.txt file provides a list of the new capabilities.

How does JavaMail handle thread management? Looks like by default, most of the threads created by JavaMail while fetching the messages from a Store/Folder object are not being released automatically. Do I need to explicitely invoke any method so that these threads get released?Location: http://www.jguru.com/faq/view.jsp?EID=214263 Created: Sep 23, 2000 Modified: 2000-09-23 21:47:33.747Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by Shashidhar Mudigonda (http://www.jguru.com/guru/viewbio.jsp?EID=100253

Closing the Folder, Store, or Transport should cause the thread to terminate itself after delivering any pending events to listeners.

Using JavaMail, our Exchange Server sends mail fine internally, but doesn't send mail externally. What could be the problem?Location: http://www.jguru.com/faq/view.jsp?EID=224085 Created: Oct 6, 2000 Modified: 2000-12-13 13:25:21.262Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by justin whitehead (http://www.jguru.com/guru/viewbio.jsp?EID=43079

The problem has to do with the relaying configuration of the mail server. You'll need to talk to your mail admin to enable relaying.

How can I keep a copy of sent mails in my Netscape Mail folder?Location: http://www.jguru.com/faq/view.jsp?EID=225020 Created: Oct 9, 2000 Modified: 2000-10-09 08:27:54.137Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by baskar arunachalam (http://www.jguru.com/guru/viewbio.jsp?EID=91625

JavaMail knows nothing about your Netscape mail folder. There is no magic that saves things there. If you want to save a copy, you have to build that in yourself. The easiest way to do this is to just add yourself to the CC or BCC list of the message.

How can I log the debug messages to a file when I session.setDebug(true)?Location: http://www.jguru.com/faq/view.jsp?EID=225934 Created: Oct 10, 2000 Modified: 2000-10-10 15:38:24.587











http://java.sun.com/products/javamail/JavaMail-1.2-changes.txt



Author: Stefan Ritter (http://www.jguru.com/guru/viewbio.jsp?EID=217777) Question originally posed by John Zukowski PREMIUM (http://www.jguru.com/guru/viewbio.jsp?EID=7

Don't how if it helps you, but I think it works.

1. Solution Start your program from a console with: java myProgramm >output.txt

Now all System.out's should by found in the file output.txt.

2. Solution You can also start your programm within the texteditor Textpad (www.textpad.com) and all the outputs are automatically in a new document which you can save to harddisk.

3. Solution Overwrite the OutputStream. Use something like System.setOut(PrintStream myFileOutputStream)

What books are available for learning about the Internet Email protocols and the JavaMail API?Location: http://www.jguru.com/faq/view.jsp?EID=226205 Created: Oct 10, 2000 Modified: 2000-10-10 20:37:56.749Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

First, as far as the JavaMail APIs go, there is no book out dedicated to just that. About the best coverage I've seen is the single chapter on the topic in Elliotte Rusty Harold's 2nd edition of Java Network Programming.

As far as learning about the mail protocols, there are three available, and none are too code centric.

• Programming Internet Email by David Wood from O'Reilly • Programmer's Guide to Internet Mail by John Rhoton from Digital Press • Internet Email Protocols: A Developer's Guide by Kevin Johnson from Addison

Wesley

How do I fire events when new messages arrive in my Inbox folder?Location: http://www.jguru.com/faq/view.jsp?EID=232638 Created: Oct 20, 2000 Modified: 2000-10-20 06:35:32.546Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by vijay kumar (http://www.jguru.com/guru/viewbio.jsp?EID=232594

You can attach a MessageChangedListener to the folder. Then in the listener, the public void messagesAdded(MessageCountEvent e) will be called when a message is added and public void messagesRemoved(MessageCountEvent e) will be called when deleted.

Now the bad news. This only works with IMAP, not POP3. With POP, messages can't be added to the folder while its open.





http://www.ibiblio.org/javafaq/books/jnp2e/





Changed in 1.4 Author: Simon Pearce (http://www.jguru.com/guru/viewbio.jsp?EID=1102555), Jul 20, 2003The folder method is addMessageCountChanged(MessageCountListener listener) in version 1.4. So you implement a MessageCountListener.And it doesn't seem to work for MS Exchange (albeit a locked down version).Simon

How can I use JavaMail with a database? Location: http://www.jguru.com/faq/view.jsp?EID=235890 Created: Oct 24, 2000 Modified: 2000-10-24 23:00:21.987Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by back hyejin (http://www.jguru.com/guru/viewbio.jsp?EID=235836

There is nothing special about using the JavaMail API with a database. The database accessing is completely separate from the JavaMail code. Get the information from the database with JDBC. Create the message with JavaMail API. The two don't talk to each other.

What causes an "javax.activation.UnsupportedDataTypeException: no object DCH for MIME type xxx/xxxx javax.mail.MessagingException: IOException while sending message;" to be sent and how do I fix this? [This happens for known MIME types like text/html.]Location: http://www.jguru.com/faq/view.jsp?EID=237257 Created: Oct 26, 2000 Modified: 2002-03-30 19:48:11.222Author: Mauro Gagni (http://www.jguru.com/guru/viewbio.jsp?EID=32904) Question originally posed by charles monica (http://www.jguru.com/guru/viewbio.jsp?EID=13470

The Java Activation Framework used by JavaMail is not configured correctly.

It doesn't know how to handle the text/html content type.

An html handler is provided in JavaMail 1.1.3 but the mailcap file is not configured to use it.

Add to your mailcap file the line:

text/html;; x-java-content-handler=com.sun.mail.handlers.text_html

and create a multipart message when sending html messages, otherwise it will not be recognised as an HTML page from the client.

HTML messages does not cause this problem with the 1.2 release of the JavaMail API.








Lotus Notes / Domino classloader rejects JavaMail agents Author: Johan Känngård (http://www.jguru.com/guru/viewbio.jsp?EID=313126), Dec 13, 2002

The same error messages is produced when trying to run a JavaMail agent in Lotus Notes or Domino, because the static initializer blocks of the default DataHandlers are not run correctly. The problem can be avoided by adding the JAR files of the Java Activation Framework and the JavaMail API to the JavaUserClasses in the notes.ini, like this:

JavaUserClasses=.;D:\Lotus\Notes\lib\activation.jar;D:\Lotus\Notes\lib\mail.jar;

I have another solution Author: Frank Jorga (http://www.jguru.com/guru/viewbio.jsp?EID=1165554), Apr 23, 2004Configuration didn't help me. Solution was much simpler make sure mail.jar and activation.jar in your IDE Project and in jour Appserver are version matching and all the same. I had some from JDK and some different version from Tomcat mixed in my environmet. I scanned my drive and replaced all of them with the current sun version and voila ...

Solution to javax.activation.UnsupportedDataTypeException Author: Antoine Diot (http://www.jguru.com/guru/viewbio.jsp?EID=1174272), May 27, 2004I had a problem with this exception when using Tomcat. I originally had mail.jar in the /WEB-INF/lib/ folder and activation.jar in the common/lib/ folder. When I put them in the same folder, the problem went away. Could be an issue with the order in which they are loaded.

Its all about having the matching jars Author: Jens Buehring (http://www.jguru.com/guru/viewbio.jsp?EID=1211606), Nov 18, 2004

As others wrote before me, this error is all about having the matching pair of mail.jar and activation.jar.

At our application the problem was, we had a mail.jar in the /lib directory of our application, but no matching activation.jar. At execution the Tomcat used its own activation.jar which was obviously not the matching pair to our mail.jar. Therefore we got the exception thrown at sending the mail.

The solution which worked in the end was:

• to download the newest versions of the jars, • place them into the lib directory of our application,

• sort them to top-position in the build-order and rebuild the project.

Re: Its all about having the matching jars Author: Austin Prichard-Levy (http://www.jguru.com/guru/viewbio.jsp?EID=1219805), Jan 6, 2005Actually, I beg to differ. I tried all the suggestions about matching jars, but still got errors. In my case, I was using a custom Java wrapper class I developed for the background processing of emails from Java apps when I encountered these issues with unhandled MIME types, specifically "text/html" and "multipart/*".

For me, the initial solution was (as suggested in this forum at the outset) providing for these types via the mailcap file (either external or located in the META-INF folder of the distribution jar). However, I subsequently ended up adding the following lines to my email wrapper class:

// add handlers for main MIME typesMailcapCommandMap mc = (MailcapCommandMap)CommandMap.getDefaultCommandMap();mc.addMailcap("text/html;; x-java-content-handler=com.sun.mail.handlers.text_html");mc.addMailcap("text/xml;; x-java-content-handler=com.sun.mail.handlers.text_xml");mc.addMailcap("text/plain;; x-java-content-handler=com.sun.mail.handlers.text_plain");mc.addMailcap("multipart/*;; x-java-content-handler=com.sun.mail.handlers.multipart_mixed");mc.addMailcap("message/rfc822;; x-java-content-handler=com.sun.mail.handlers.message_rfc822");CommandMap.setDefaultCommandMap(mc);

This works fine, and keeps all the relevant dependencies in one place, so I know it will always work irrespective of the overall Java app configuration. Another reason was speed, as the following excerpt from the relevant javadoc proves:

(http://java.sun.com/j2ee/1.4/docs/api/javax/activation/MailcapCommandMap.html)

The MailcapCommandMap looks in various places in the user's system for mailcap file entries. When requests are made to search for commands in the MailcapCommandMap, it searches mailcap files in the following order:

1) Programatically added entries to the MailcapCommandMap instance. 2) The file .mailcap in the user's home directory. 3) The file <java.home>/lib/mailcap. 4) The file or resources named META-INF/mailcap. 5) The file or resource named META-INF/mailcap.default (usually found only in the

activation.jar file).

This means that the programmatic route is the fastest to execute. Any better reason needed?! :-)

HTH Austin

What is a FileDataSource?Location: http://www.jguru.com/faq/view.jsp?EID=237612 Created: Oct 26, 2000 Modified: 2000-10-26 10:08:07.138Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by Chandra Prasad Reddy (http://www.jguru.com/guru/viewbio.jsp?EID=231859

A FileDataSource is part of the JavaBeans Activation Framework, package javax.activation. It represents a DataSource associated with a file, that relies on a FileTypeMap to associate mime types with file extensions. They can be used to send file attachments: MimeBodyPart messageBodyPart = new MimeBodyPart();DataSource source = new FileDataSource(fileAttachment);messageBodyPart.setDataHandler( new DataHandler(source));messageBodyPart.setFileName( filenameString);

The other type of predefined DataSource in the Activation Framework is the URLDataSource.

Is there anything special about sending mail with JavaMail when using EJB?Location: http://www.jguru.com/faq/view.jsp?EID=240549 Created: Oct 30, 2000 Modified: 2002-03-30 19:49:27.279Author: Tim Rohaly (http://www.jguru.com/guru/viewbio.jsp?EID=10) Question originally posed by vini vipin (http://www.jguru.com/guru/viewbio.jsp?EID=239441

The javax.mail libraries are a standard part of of J2EE, so the whole API is there. Even the JavaBeans Activation Framework is there, which is required by JavaMail. However, you're only allowed to send mail, not receive.

With J2EE, you are required to obtain the javax.mail.Session instance from a JNDI lookup rather than creating it yourself, but other than that it's the same as sending mail using JavaMail from a standalone app.

You can look at the Java Pet Store example, which does this.




http://java.sun.com/products/javabeans/glasgow/javadocs/javax/activation/URLDataSource.html

http://java.sun.com/products/javabeans/glasgow/javadocs/javax/activation/FileDataSource.html




Also, see What does this messaging exception mean:javax.mail.NoSuchProviderException: No provider for Address type: rfc822

I am running a Weblogic on a Sun...


With Weblogic Server 5.1, I have seen an implementation... Author: Kian Hui Teo (http://www.jguru.com/guru/viewbio.jsp?EID=64456), Oct 31, 2000With Weblogic Server 5.1, I have seen an implementation of a mail bean before. Basically, just remember to include the mail.jar inside the weblogic classpath setting if you are using service pack 5 and below.

You will also need to configure a smtp host for sending out your mail. You can set this inside your weblogic.properties file. Actual documentations on this can be found on the weblogic documentation website at http://www.bea.com Currently, the mail bean has already been implemented on production systems and working fine.

How do I create two MimeMessage objects and attach the second MimeMessage to the first MimeMessage? When the mail is received the mail should have an attached email. The attached email should contain "from,to, subject, content" of the 2nd MimeMessage. Location: http://www.jguru.com/faq/view.jsp?EID=242307 Created: Nov 1, 2000 Modified: 2000-11-01 06:54:27.837Author: Benjamin Chi (http://www.jguru.com/guru/viewbio.jsp?EID=232856) Question originally posed by Benjamin Chi (http://www.jguru.com/guru/viewbio.jsp?EID=232856

See code below. The significant part is using the header "message/rfc822" and passing the Message object to the setContent() method:

MultiBodyPart.setContent(Message, "message/rfc822");

=========== Code Example. ===============Message aMsg = // Populate this Message obj.MimeMultipart mmp = new MimeMultipart();

// First part: ContentsMimeBodyPart mbp = new MimeBodyPart();mbp.setText(aText);mmp.addBodyPart(mbp);

// Second Part: AttachmentsMimeBodyPart mbp2 = new MimeBodyPart();// mimetype as forwarded attachmentmbp2.setContent(aMsg, "message/rfc822"); mmp.addBodyPart(mbp2);======================================




http://www.bea.com/





How do I receive an acknowledgement that a user has received my message?Location: http://www.jguru.com/faq/view.jsp?EID=242335 Created: Nov 1, 2000 Modified: 2000-12-21 21:56:29.639Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

There is an SMTP extension that supports Delivery Status Notifications (DSN) defined in RFC 1891. This may or may not be supported by the user's Mail Transport Agent (MTA).

To receive the acknowledgements, you'll need to set two properties in the Properties passed on when getting a Session. These are "mail.smtp.dsn.notify" and "mail.smtp.dsn.ret". The first specifies where it goes and the second what you want.

props.put("mail.smtp.dsn.notify", "SUCCESS,FAILURE ORCPT=rfc822;[email protected]");props.put("mail.smtp.dsn.ret", "HDRS");

For a full description of the meaning see the RFC. If you want the full message sent back to you, use FULL instead of HDRS. [email protected] is meant to the original recipient of the email.

Be sure to change the address to send the acks to a more appropriate email.

These acks are not about when the user reads the message, only acknowledging receipt of the message by their mail server. Its possible the mail server throws the message away as spam for instance and the end user never actually gets the message in their mailbox.

Another option, though something that can be ignored by the mail client / user is setting the "Disposition-Notification-To" header to the email you'd like to send the notification to:

message.setHeader( "Disposition-Notification-To", "[email protected]");

How do you force the encoding of a file attachment?Location: http://www.jguru.com/faq/view.jsp?EID=245743 Created: Nov 5, 2000 Modified: 2000-11-06 09:13:01.216Author: Dieter Wimberger (http://www.jguru.com/guru/viewbio.jsp?EID=25708) Question originally posed by christopher roth (http://www.jguru.com/guru/viewbio.jsp?EID=3072

You can do following:

1. Write your own DataSource implementation that returns type, name, and an InputStream that will read from an already encoded byte array (i.e. a ByteArrayInputStream). See javax.activation.DataSource API for




http://community.roxen.com/developers/idocs/rfc/rfc1891.html

http://community.roxen.com/developers/idocs/rfc/rfc1891.html



information about the DataSource interface, and the ByteArrayDataSource class that is one of the distribution's examples.

2. Create the array holding the encoded data (here mime base64): 3. InputStream in=new FileInputStream(file);4. ByteArrayOutputStream bout=5. new ByteArrayOutputStream();6. OutputStream out=7. MimeUtility.encode(bout,"base64");8.9. int i=0;10.while((i=in.read())!=-1) {11. //maybe more efficient with a buffer12. //this is just demonstrative13. out.write(i);14.}15.out.flush();16.out.close();17.Set the name, type and the byte array (or pass it on construction). 18.EncodedDataSource encds=19. new EncodedDataSource(contenttype,20. filename, bout.toByteArray());21.Add the header of the encoding and a the DataHandler to a

MimeBodyPart(mbp): 22.mbp.addHeader("Content-Transfer-Encoding","base64");23.mbp.setDataHandler(new DataHandler(encds));

The above will work, yet, as far as I realized binary parts of mail sent are encoded anyway.


Do you really need the custom DataSource impl? Author: Craig Longman (http://www.jguru.com/guru/viewbio.jsp?EID=314597), May 3, 2001

I was having trouble sending an RTF file and getting it to be base64 encoded. because an RTF file looks mostly like regular ASCII text, the default DataSource impl was, in fact, insisting on encoding it as 7bit. Although this works for most cases, the fax-server I was mailing to seemed to insist on base64 encoded attachments.

So, after reading this FAQ, I started work on my own DataSource. However, I quickly got frustrated and started looking into what was going on and how the decision to use 7bit instead of base64 was made. I knew it was capable of sending base64 encoded attachments, as GIFs were encoded base64. I noticed that before the email was actually sent, the getEncoding() method would always return null. And it did that for both RTF and GIF attachments. So, after more looking, the only way I could find to indicate what encoding I wanted was to use the setHeader() method, why the heck isn't there a simply setEncoding() method? or setPreferredEncoding()!!???

Anyway, the following code works well for me. If I exclude the

messageBodyPart.setHeader() call, then the RTF is 7bit encoded, but with the call, it is base64 encoded:

Properties props = new Properties();

props.put( "mail.host", "mx.domain.com" );

Session session = Session.getDefaultInstance( props, null ); Message message = new MimeMessage( session ); Multipart multipart = new MimeMultipart(); MimeBodyPart bodyPart = new MimeBodyPart();

bodyPart.setText( body ); multipart.addBodyPart( bodyPart );

bodyPart.setDataHandler( new DataHandler( new FileDataSource( attachFile ) ) ); bodyPart.setFileName( attachFile.getName() );// requests (forces?) base64 instead of default bodyPart.setHeader( "Content-Transfer-Encoding", "base64" ); multipart.addBodyPart( bodyPart );

message.setContent( multipart );

Transport.send( message );

How do I get the value of a specific header, delivered-to, and the list of all headers present? Location: http://www.jguru.com/faq/view.jsp?EID=245745 Created: Nov 5, 2000 Modified: 2000-11-06 09:09:41.557Author: Dieter Wimberger (http://www.jguru.com/guru/viewbio.jsp?EID=25708) Question originally posed by chandrakaladhar reddy (http://www.jguru.com/guru/viewbio.jsp?EID=232598

The javax.mail.MimeMessage API doc shows you how to achieve this:

1. String[] delto=msg.getHeader("delivered-to");The array will contain all present values as Strings.

2. Enumeration enum=msg.getAllHeaders();The enumeration will contain all present headers as javax.mail.Header objects.

What are the restrictions / limitations for adding custom, user-defined headers?Location: http://www.jguru.com/faq/view.jsp?EID=246463 Created: Nov 6, 2000 Modified: 2000-11-07 05:21:24.631Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)






User-defined header names can consist of only printable ASCII characters, excluding the colon. They should start with an "X-", but there is no strict requirement that they do.

For example, the following would add a custom header to a message:

message.addHeader("X-FAQs", "http://www.jguru.com/faq");

How can I send an attachment without having to use a physical file?Location: http://www.jguru.com/faq/view.jsp?EID=248031 Created: Nov 7, 2000 Modified: 2000-11-08 06:56:07.377Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by KIM DUONG (http://www.jguru.com/guru/viewbio.jsp?EID=247389

Instead of using FileDataSource, create a custom DataSource. You can find a ByteArrayDataSource example of this in the demo directory that comes with JavaMail.Comments and alternative answers

Alternative solution Author: Bas Gooren (http://www.jguru.com/guru/viewbio.jsp?EID=751897), Feb 8, 2002I work with an application that does not know what kind of attachment it will get. Can be binary/text, pdf/txt/doc/etc. The attachments come from a database. To deal with this in an easy way, what I did is this: String data_from_db = ...(get from db)String att_type = ...(get from db)MimeBodyPart att = new MimeBodyPart()att.setText(data_from_db);att.setHeader("Content-Type", att_type);att.setHeader("Content-Transfer-Encoding", "base64");att.setHeader("Content-Disposition", "attachment");att.setFileName(filename_from_db);

// etc...add it to the MimeMultiPart object and send it.

What is the best way to launch the default e-mail editor from a Java Application. Can a new message be automatically sent to the editor?Location: http://www.jguru.com/faq/view.jsp?EID=250044 Created: Nov 9, 2000 Modified: 2000-11-10 10:14:35.843Author: Serge Knystautas (http://www.jguru.com/guru/viewbio.jsp?EID=100012) Question originally posed by Jon Drury (http://www.jguru.com/guru/viewbio.jsp?EID=47899

There is no standard way to launch the default e-mail editor from a Java Application. If you were in a Java Applet, you could leverage the showDocument() method of AppletContext and pass it a mailto: protocol. If you could do this, in addition to







specifying the target, you could specify the initial subject and body with command line parameters, e.g., mailto:[email protected]?subject=My%20Subject&body=The%20body%20of%20my%20message.

Again however, there is no standard way to launch an external application like an e-mail editor from a Java Application. If you want to check that you are running in Windows 95/98/NT/2k, you could access the Runtime object and use its exec() method to run start mailto:[email protected]?subject=...... This OS-specific command instructs Windows to open the default e-mail editor and create a new message with the given destination and subject.

How do I remove an attachment from a MimeMessage? If I use getContent().getParent().removeBodyPart(BodyPart part) is seems to work, but when I write the MimeMessage to harddisk with writeTo(OutputStream) the attachments are still in the textfile. What am I doing wrong?Location: http://www.jguru.com/faq/view.jsp?EID=251520 Created: Nov 11, 2000 Modified: 2000-11-16 08:47:54.928Author: Dieter Wimberger (http://www.jguru.com/guru/viewbio.jsp?EID=25708) Question originally posed by Stefan Ritter (http://www.jguru.com/guru/viewbio.jsp?EID=217777

You start with a reference to a MimeMessage. Then you get its content, which will be a reference to a MimeMultipart instance. Next you get its parent again, which leaves you with the reference to the MimeMessage you started from. I wonder why there is no MessagingException thrown if you try to remove a MimeBodyPart that is part of the MimeMultipart instance, but at least it should return false (which tells you it did not work out).Here is a piece of code that should do the job: //suppose you have a reference to a MimeMessage//called myMessage

MimeMultipart mmp=(MimeMultipart)myMessage.getContent();

//now a loop over its body partsfor(int i=0; i<getCount(); i++) { MimeBodyPart mbp=(MimeBodyPart)mmp.getBodyPart(i); if(hasToBeRemoved(mbp)) { mmp.removeBodyPart(i); //this will shift all parts down so: //the index of the loop needs correction i--; }}

//if you want to persist that new statemyMessage.saveChanges();//Note: only works if the folder is opened READ_WRITE !

[...]

private boolean hasToBeRemoved(MimeBodyPart mbp) {

//check according to your criteria




//and return true or false

}//hasToBeRemoved


Removing Body Parts Author: Troy Shelton (http://www.jguru.com/guru/viewbio.jsp?EID=493342), Nov 14, 2001In addition to Dieter Wimberger's answer, one needs to add one more line of code to it in order to actually write the message to a file with the body part removed. // Working Code Sample

if (mm.isMimeType("text/plain")) { catalog.setMsgText((String)mm.getContent());} else if (mm.isMimeType("multipart/*")) { mmp=(MimeMultipart)mm.getContent();for (int i = 0; i < mmp.getCount(); i++) { BodyPart part = mmp.getBodyPart(i); if (hasToBeRemoved(part)) { mmp.removeBodyPart(i); i--; } // +++++ end of if (hasToBeRemoved(part))} // +++++ end of for (int i = 0; i < mmp.getCount(); i++)

// Sets the Message's content.mm.setContent(mmp);mm.saveChanges();

// End of Working Code Sample

How can I read a message with Content-transfer-encoding header 8 bit using JavaMail 1.1.3?Location: http://www.jguru.com/faq/view.jsp?EID=251523 Created: Nov 11, 2000 Modified: 2000-11-16 08:09:00.321Author: Dieter Wimberger (http://www.jguru.com/guru/viewbio.jsp?EID=25708) Question originally posed by Miguel Angel Medina Lopez (http://www.jguru.com/guru/viewbio.jsp?EID=248565

According to the API Specification, 8bit is supported, because its part of the RFC2045 specification.The MimeUtility.decode(java.io.InputStream is, java.lang.String encoding) method should help you to "read" parts of the message.The following code might help or at least give an idea://assume you have a MimeBodyPart mbp InputStream in=mbp.getInputStream(); String[] encoding=mbp.getHeader("Content-Transfer-Encoding"); if(encoding!=null && encoding.length>0){ in=MimeUtility.decode(in,encoding[0]); }

//use the Stream in to read from...




Note that it will retrieve the encoding from the header, so it should work for all supported encodings.Comments and alternative answers

8bits and 8bit Author: Pengyu Zhu (http://www.jguru.com/guru/viewbio.jsp?EID=404670), Apr 17, 2001By default, getContent() will return decoded text. But,some mail server will put 8bits instead of 8bit. Javamail will throw exception when encoding is "8bits". In that case, you will have to decode the message by yourself, force using "8bit".

Does the SmtpClient class support sending mail to mulitple recipients, like with CC?Location: http://www.jguru.com/faq/view.jsp?EID=255297 Created: Nov 16, 2000 Modified: 2000-11-16 07:11:29.609Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by Jane Ng (http://www.jguru.com/guru/viewbio.jsp?EID=112489

There is no concept of CC'ing anyone. However, you can have a comma delimited list in the to field.

String to = "[email protected], [email protected]";SmtpClient smtp = new SmtpClient(host);smtp.from(from);smtp.to(to);

How to deploy a servlet that includes javax.mail.* on Tomcat? Location: http://www.jguru.com/faq/view.jsp?EID=259166 Created: Nov 21, 2000 Modified: 2000-11-21 07:12:13.22Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by Zuofeng Zeng (http://www.jguru.com/guru/viewbio.jsp?EID=240547

Just place the mail.jar and activation.jar files (and possibly the pop.jar file if you are using POP3) in the CLASSPATH of the web server. The simplest way to do this is to rely on the Java extensions framework. Add them to the JAVA_HOME/jre/lib/ext directory. Just copy the files there. Otherwise, set the CLASSPATH environment variable before starting Tomcat. The startup scripts retain the existing CLASSPATH, adding the Tomcat-specific stuff to the end.

See What do I need to acquire in order to get started with JavaMail? to see where to get these files.


Application-divided JavaMail providers Author: Eugene Kuleshov (http://www.jguru.com/guru/viewbio.jsp?EID=442441), Nov 19, 2001








To make JavaMail providers available only for the concrete applications you can add those jar's into particular WEB-INF/lib folder.

Where do I get the POP3 provider for use with JavaMail 1.2?Location: http://www.jguru.com/faq/view.jsp?EID=261551 Created: Nov 23, 2000 Modified: 2000-11-23 21:11:57.71Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

The POP3 provider is now included with the 1.2 release. Finally, you no longer need to get it separately.

How to sort the messages in JavaMail?Location: http://www.jguru.com/faq/view.jsp?EID=266225 Created: Nov 30, 2000 Modified: 2000-11-30 09:31:57.594Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by guan ho (http://www.jguru.com/guru/viewbio.jsp?EID=126860

Within the JavaMail classes there is no support for this. However, once you get the array of messages back from a folder, you can call the Arrays.sort() method in the collections framework to sort the messges. Since MimeMessage doesn't implement Comparable, you'll need to provide your own Comparator specifying how you want the messages to be sorted.Comments and alternative answers

Could you post some example code on this....? Author: Kevin Baker (http://www.jguru.com/guru/viewbio.jsp?EID=882634), Oct 9, 2002Could you post some example code on this....?

Re: Could you post some example code on this....? Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7), Oct 9, 2002The Compartor interface requires you to implement the compareTo method, which accepts two args (the messages to compare for here). Compare the two fields of the message you want to sort by. If message1 comes first, return -1, if equal, return 0, if message2 comes first, return 1.

How can I create a folder on my mail server? Location: http://www.jguru.com/faq/view.jsp?EID=266420 Created: Nov 30, 2000 Modified: 2000-11-30 20:22:01.063Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by manash ray (http://www.jguru.com/guru/viewbio.jsp?EID=266333

First, POP3 doesn't support folders so if you are using POP3, then forget it, can't be done. If you are using IMAP, just call the create() method of Folder after naming the Folder object by calling the constructor with the name.









How do I store messages locally using JavaMail? provides information about storing messages locally.

How do I display the image sent as an attachment with the mail in JSP while retrieving the mails?Location: http://www.jguru.com/faq/view.jsp?EID=268259 Created: Dec 3, 2000 Modified: 2000-12-03 20:18:09.615Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by Amit Kaushik (http://www.jguru.com/guru/viewbio.jsp?EID=50383

If the message came across as text/html content, just send the HTML out as the output of the JSP request. All the different IMG tags will make separate requests to the server to display the images.

The only real problem is if the images come across with the JavaMail message and have a URL that begins with a cid: URL (as demonstrated in How do you send HTML mail with images?). If that is the case, then you deal with sending the image yourself (and saving it locally). You can try to create a protocol handler for cid, but I think the best way is to convert the URL into one that is handled by default, like any other image, with an HTTP request.

How do I move messages between folders?Location: http://www.jguru.com/faq/view.jsp?EID=268755 Created: Dec 4, 2000 Modified: 2000-12-04 05:49:38.48Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by shams Tabrez (http://www.jguru.com/guru/viewbio.jsp?EID=264911

First, if you are using POP, you can't. There is only one folder, the INBOX.

If you happen to be using IMAP, the way to move messages between folders is with the appendMessages() or the copyMessages() method of Folder. In either case, you would need to delete the message from the original folder yourself.

How can I set the transfer encoding type??? I wish to send an HTML mail using MimeMessage class and encode it to "base64". but I couldn't set the Content-Transfer-Encoding value of mail header.Location: http://www.jguru.com/faq/view.jsp?EID=268864 Created: Dec 4, 2000 Modified: 2000-12-14 17:36:31.691Author: marx0207 wang (http://www.jguru.com/guru/viewbio.jsp?EID=268565) Question originally posed by Jae Cheol Kim (http://www.jguru.com/guru/viewbio.jsp?EID=265863

Encode the Html in "Base64", for example: String Html="<html><body>"+ "this is a test"+ </body></html>";MimeMessage msg =new MimeMessage();String DefaultCharSet= MimeUtility.getDefaultJavaCharset();msg.setText(MimeUility.encodeText(Html,DefaultCharSet,"B"));













msg.send();Q short for Quoted PrintableB short for Base64

<explain>

I use MimeUtility.encodeText(,,) for encode process, you could use that method encode your HTML string in "B"--Base64 and be set on the message part.

for details check in JavaMail Api javax.mail.internet.Mimeutility section.


perhaps fixed in a new version of JavaMail? Author: Craig Longman (http://www.jguru.com/guru/viewbio.jsp?EID=314597), May 3, 2001

The following worked for me:

Properties props = new Properties();

props.put( "mail.host", "mx.domain.com" );

Session session = Session.getDefaultInstance( props, null );

Message message = new MimeMessage( session );

message.setFrom( InternetAddress.parse( "<[email protected]>" )[0] ); message.setSubject( "test" ); message.setSentDate( new Date() ); message.addRecipients( Message.RecipientType.TO, InternetAddress.parse( "<[email protected]>" ) );

message.setText( body ); message.setHeader( "Content-Transfer-Encoding", "base64" );

Transport.send( message );

Notice that the message.setHeader() call is after the setText() call. This is critical, if you call setHeader() before you call setText(), then the message is still sent as 7bit encoded.

One last point, if you try this at home, you will probably find that the email that arrives is encoded as 7bit or probably 8bit. This is because most email servers, when they see a base64 encoded, non-multipart email, will automatically convert the email to a different format, normally 8bit. However, you should be able to verify that it arrived as base64 by examining the headers and see what the server did to the email before delivering it. Any decent email server should put headers in explaining any

modifications that were made to the email contents. My email server adds this:

X-MIME-Autoconverted: from base64 to 8bit by mx.domain.com id MAA17541

How can I set the timeout length for the different SMTP, IMAP, and POP connections?Location: http://www.jguru.com/faq/view.jsp?EID=270916 Created: Dec 6, 2000 Modified: 2000-12-06 16:56:00.159Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

The JavaMail 1.2 API adds a system property mail.{smtp,imap,pop3}.connectiontimeout to add this capability. Prior to 1.2, you couldn't do this.

How do I restrict the size of the Mail attachment to be sent? For example, I want to sent a document only if its size less <= 300K.Location: http://www.jguru.com/faq/view.jsp?EID=275027 Created: Dec 11, 2000 Modified: 2000-12-11 10:47:29.372Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by Ram Prasad.K (http://www.jguru.com/guru/viewbio.jsp?EID=108201

When creating the mail message to send, check the size of the attachment before 'attaching'. If it is too large, don't attach it. There is nothing that is part of the JavaMail API to limit this for you, though you're SMTP server might reject the message if too large.

Keep in mind that the attachment size is the 7-bit encoded size, not necessarily the original 8-bit encoded size. The Part interface has a getSize() method so you can find out its size.

How do I send e-mail through Oracle triggers?Location: http://www.jguru.com/faq/view.jsp?EID=276261 Created: Dec 12, 2000 Modified: 2000-12-13 00:32:53.091Author: Mark Bradley (http://www.jguru.com/guru/viewbio.jsp?EID=276260) Question originally posed by Rajagopalan Varadarajan (http://www.jguru.com/guru/viewbio.jsp?EID=273011

A good set of responses I've seen is from the Oracle Magazine. From there select the "Ask Tom" column. You can search his articles for "JavaMail" or just "mail". It has responses for Oracle 8i and previous releases. Versions prior to 8.1.5 rely on Oracle packages instead of Java.

The questions and answers on that page are, naturally, heavily Oracle-specific!

It describes a way to load the activation.jar and mail.jar files (which cannot be compressed) into the database using the "loadjava" program.

http://www.oracle.com/oramag/









There is Java and PL/SQL sample code which supports attachments using BLOBs. It has the repackaged JAR files.

You will need to modify the code to handle your specific needs. Load this code, then just call the PL/SQL function from the trigger.

How can I get email addresses out of an MS Outlook database, and add knew ones? Location: http://www.jguru.com/faq/view.jsp?EID=276923 Created: Dec 13, 2000 Modified: 2000-12-13 11:50:41.384Author: Jorge Jordão (http://www.jguru.com/guru/viewbio.jsp?EID=275762) Question originally posed by nitin dubey (http://www.jguru.com/guru/viewbio.jsp?EID=249436

You can access MS Outlook via a Java-COM bridge, and use the Outlook COM interface variables and methods in your Java program. I know 2 products that can help you with that:

• JIntegra , which is commercial • JACOB , which is open-source

Accessing a Microsoft Exchange server with just my username doesn't let me read my mail, what's wrong?Location: http://www.jguru.com/faq/view.jsp?EID=277179 Created: Dec 13, 2000 Modified: 2000-12-13 13:17:54.505Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

This seems to be an issue when NT authentication is enabled. If your username is foo, your mailbox name is Foo.Bar and your server is FUBAR, your username for connecting to your mailbox is not foo. Instead, it would beFUBAR\foo\Foo.Bar

Where can I find all of the RFCs related to e-mail?Location: http://www.jguru.com/faq/view.jsp?EID=283013 Created: Dec 20, 2000 Modified: 2000-12-20 15:43:10.852Author: John Mitchell (http://www.jguru.com/guru/viewbio.jsp?EID=4)

The Internet Mail Consortium maintains a page which lists and tracks all of the IETF Requests for Comments (RFCs) related to internet mail standards.


RFC Website Author: Mohammad Khan (http://www.jguru.com/guru/viewbio.jsp?EID=419921), May 11, 2001Please goto this website for your answers: http://www.rfc-editor.org/.

Where can I find all of the RFCs for securing email?Location: http://www.jguru.com/faq/view.jsp?EID=283018


http://www.rfc-editor.org/

http://www.imc.org/rfcs.html


http://www.imc.org/





http://users.rcn.com/danadler/jacob

http://www.linar.com/




Created: Dec 20, 2000 Modified: 2000-12-20 13:30:03.284Author: John Mitchell (http://www.jguru.com/guru/viewbio.jsp?EID=4)

The Internet Mail Consortium maintains a list of all of the internet mail RFCs and part of that page is a section on Message and Transmission Security. That section covers MIME, S/MIME, Diffie-Hellman, LDAP, PKCS, MD5, CAST, RC2, TLS, SMTP, IMAP, POP3, SASL, PEM, PGP, OpenPGP, SecureID, CMS, Skipjack, etc.

Where can I find a free, Java implementation of OpenPGP?Location: http://www.jguru.com/faq/view.jsp?EID=284603 Created: Dec 22, 2000 Modified: 2000-12-22 14:34:08.872Author: John Mitchell (http://www.jguru.com/guru/viewbio.jsp?EID=4)

Well, a first cut has been made in the Cryptix OpenPGP package.

What is OpenPGP?Location: http://www.jguru.com/faq/view.jsp?EID=284604 Created: Dec 22, 2000 Modified: 2000-12-22 17:14:38.335Author: John Mitchell (http://www.jguru.com/guru/viewbio.jsp?EID=4)

OpenPGP is an IETF specification for a standard, completely open PGP (Pretty Good Privacy). OpenPGP is defined in RFC 2440 as providing "data integrity services for messages and data files" via encryption (symmetric and asymmetric), digital signatures, compression, radix-64 (aka ASCII armoring), and certificate and key mangement services.

What OpenPGP solutions are available?Location: http://www.jguru.com/faq/view.jsp?EID=284612 Created: Dec 22, 2000 Modified: 2000-12-22 14:36:27.861Author: John Mitchell (http://www.jguru.com/guru/viewbio.jsp?EID=4)

Commercially: Network Associate's PGP Security

Free for non-commercial use: PGP Freeware

Free:

• GNU Privacy Guard (gnupg) • Cryptix OpenPGP

Does the JavaMail API provide any facility to create an Address book, so that address lookup can be developed?Location: http://www.jguru.com/faq/view.jsp?EID=288191 Created: Dec 28, 2000 Modified: 2000-12-28 14:23:34.15Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by Shankar GS (http://www.jguru.com/guru/viewbio.jsp?EID=287967

There is no capabilities for creating or accessing an address book as part of the JavaMail API.




http://www.cryptix.org/products/openpgp/index.html

http://www.gnupg.org/

http://web.mit.edu/network/pgp.html

http://www.pgp.com/






http://www.ietf.org/



http://www.cryptix.org/products/openpgp/index.html



http://www.imc.org/rfcs.html#security


http://www.imc.org/


If you were interested in creating your own, consider using JDBC, property files, or some other mechanism to create / access an address book. Using JNI/COM to access an Outlook address book is another option, but then your program won't work on Linux, Solaris, or most other non-Windows machines.

How can I specify where bounce messages should go, if I don't want them to come back to the from/replyTO field?Location: http://www.jguru.com/faq/view.jsp?EID=289446 Created: Dec 29, 2000 Modified: 2000-12-29 18:44:50.981Author: Ellen Spertus (http://www.jguru.com/guru/viewbio.jsp?EID=289445) Question originally posed by balasundar ramammorthi (http://www.jguru.com/guru/viewbio.jsp?EID=283122

Bounce messages (and other errors) are sent to the SMTP FROM (also called ENVELOPE FROM) attribute, not the MESSAGE FROM attribute, which is what is set with Message.setFrom(). You can set the SMTP FROM as follows:

Properties props = System.getProperties();props.put("mail.smtp.from", "[email protected]");If you do not provide a value for SMTP FROM, the MESSAGE FROM value is used.

See also Sun's JavaMail FAQ.


To be clear, the question implies something that is... Author: John Mitchell (http://www.jguru.com/guru/viewbio.jsp?EID=4), Dec 29, 2000

To be clear, the question implies something that is imprecise (if not incorrect)... Bounce messages are sent to the mail's envelope return path (ERP) address. The ERP is specified in the MAIL FROM SMTP command.

Yes, that's often the same address as the message body's From: field but they are by no means required to be the same. For example, mailing list programs often specify the ERP as a special, list specific address... Sometimes it's the list owner's alias but, good mailng list programs such as ezmlm use a trick called VERP (Variable Envelope Return Path) wherein every messsage is sent to each user using a different ERP. Therefore, any bounce messages to the VERPs directly identify the problem subscriber address. Ezmlm can use that information to do things like automatically unsubscribe bad addresses. Obviously, to implement VERPs requires a bit of tracking and the cooperation between the mailing list programs and the MTA. In this particular case, ezmlm only works with qmail.

How do I determine what my SMTP server name is?Location: http://www.jguru.com/faq/view.jsp?EID=296352 Created: Jan 8, 2001 Modified: 2001-01-08 05:22:44.089Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question



http://cr.yp.to/qmail.html

http://cr.yp.to/proto/verp.txt


http://www.ezmlm.org/

http://java.sun.com/products/javamail/FAQ.html#smtpfrom




originally posed by Vishnu Kumar Prasad (http://www.jguru.com/guru/viewbio.jsp?EID=296273

If you are in a corporate environment, you would ask the IT support group for your company. For individuals (usually from home), you should have received this information from your ISP.

In either case, if you are already sending and receiving mail from a mail tool like Outlook, Eudora, pine... , you should already have this information configured in your mail tool and can just copy the information from that setup.

In many cases, it is just prefixing smtp with your domain. If your domain was microsoft.com, a good guess at the server might be smtp.microsoft.com.


For an automated guess first find the URL of your ... Author: Mark Thornton (http://www.jguru.com/guru/viewbio.jsp?EID=276034), Jan 8, 2001For an automated guess first find the URL of your machine (via getLocalHost()) and then use DNS (with a JNDI DNS provider) to look for MX records which should give the mail server address if one exists. If you don't find one, take off the first part of the domain name and repeat. So if your machine was fred.microsoft.com, first search for an MX record associated with fred.microsoft.com, and then search microsoft.com. While this may not work, system administrators could easily configure DNS servers so that it did.

If we use a web-based email provider like Yahoo Mail, how can we find out what the SMTP / POP server is to get / send mail from JavaMail?Location: http://www.jguru.com/faq/view.jsp?EID=296361 Created: Jan 8, 2001 Modified: 2004-01-08 06:05:50.354Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by zameer sait (http://www.jguru.com/guru/viewbio.jsp?EID=296265

To find out the SMTP and POP servers for a web-based email provider, you need to search through the Help docs for the provider for this information to see if they even support it. For instance, for Yahoo Mail, help is available through their Help Desk. Specifically, How do I configure my POP3 email client to send and receive Yahoo! Mail messages? answers your questions. Other providers should have similar help available.

Specifically for Yahoo, the POP server is pop.mail.yahoo.com and the SMTP server is smtp.mail.yahoo.com. You must enable POP Access & Forwarding from their Options screen before being able to get your messages remotely.

You cannot enable this feature w/o upgrading to a fee-based access account.

http://help.yahoo.com/help/us/mail/pop/pop-03.html

http://help.yahoo.com/help/us/mail/pop/pop-03.html

http://help.yahoo.com/help/us/mail/





How do you display an attachment file using the JavaMail package?Location: http://www.jguru.com/faq/view.jsp?EID=298713 Created: Jan 10, 2001 Modified: 2001-01-10 07:43:09.455Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by Maher Arif (http://www.jguru.com/guru/viewbio.jsp?EID=289570

The JavaMail API provides no mechanism to display attachments. It is up to you to decide how you want to display something.

For instance, if your attachment is a Microsoft Word file, and you happen to be on a Windows box, you can use Runtime.exec() to fork off a process to display the file in Microsoft Word. If your attachment is a text file, you can put the contents in a read-only JTextArea. Either way, how to display is outside the realm of the JavaMail API.

How do you mark a message as read?Location: http://www.jguru.com/faq/view.jsp?EID=305942 Created: Jan 18, 2001 Modified: 2001-01-18 14:57:47.154Author: Tom Copeland (http://www.jguru.com/guru/viewbio.jsp?EID=1396)

First of all, you can't mark a message as read if you are using a POP3 server - the POP3 protocol doesn't support that. However, the IMAP v4 protocol does.

You might think the way to do this is to get the message, set the Flags.Flag.SEEN flag to true, and then call message.saveChanges(). Oddly, this is not the case.

Instead, the JavaMail API Design Specification, Chapter 4, section "The Flags Class" states that the SEEN flag is implicitly set when the contents of a message are retrieved. So, to mark a message as read, you can use the following code:

myImapFolder.open(Folder.READ_WRITE);myImapFolder.getMessage(myMsgID).getContent();myImapFolder.close(false);Comments and alternative answers

To mark a message as read the JavaMail specification... Author: Tom Copeland (http://www.jguru.com/guru/viewbio.jsp?EID=1396), Feb 20, 2001To mark a message as read the JavaMail specification says that the client has to get the content of the message. The first answer to this FAQ - ie, open the folder, get the message and call Message.getContent(), and close the folder - works fine unless there are attachments to the message. If that's the case, the client has to go recursing through the content of the message, testing each Part to see if it's a Multipart, and, if so, reading it and all its Parts.

The code below correctly handles email with attachments:

// other code...javax.mail.Folder folder = _store.getFolder(folderName);folder.open(Folder.READ_WRITE);






javax.mail.Message msg = folder.getMessage(Integer.valueOf(msgNum).intValue());Object content = msg.getContent();if (content instanceof Multipart) { readAndDiscardMultipart((Multipart)content);}folder.close(false);// other code...

private void readAndDiscardMultipart(Multipart mp) throws MessagingException, IOException { for (int i=0; i<mp.getCount(); i++) { BodyPart bodyPart = mp.getBodyPart(i); Object content = bodyPart.getContent(); if (content instanceof Multipart) { readAndDiscardMultipart((Multipart)content); } }}

Another quick way to get the SEEN flag set.. Author: Drew Farris (http://www.jguru.com/guru/viewbio.jsp?EID=259441), Feb 6, 2002.. is to use the MimeMessage copy constructor, ie: MimeMessage source = (MimeMessage) folder.getMessage(1)

MimeMessage copy = new MimeMessage(source);

when you construct the copy, the seen flag is implicitly set for the message referred to by source.

How can use the JavaMail API to access MS Exchange servers that are using NTLM with POP3 and IMAP for authentication?Location: http://www.jguru.com/faq/view.jsp?EID=309743 Created: Jan 22, 2001 Modified: 2001-01-23 04:47:35.425Author: Neil Bacon (http://www.jguru.com/guru/viewbio.jsp?EID=309742) Question originally posed by Jeff Mathers (http://www.jguru.com/guru/viewbio.jsp?EID=242391

Only with great difficulty. This may not have all that you need, but it does provide a lot of info on NTLM: http://www.innovation.ch/java/ntlm.html

How can I hardcode in my program what normally would be retrieved from javamail.default.providers and javamail.providers files? Location: http://www.jguru.com/faq/view.jsp?EID=311221 Created: Jan 24, 2001 Modified: 2001-01-24 09:33:07.532Author: David Larsson (http://www.jguru.com/guru/viewbio.jsp?EID=305689) Question originally posed by David Larsson (http://www.jguru.com/guru/viewbio.jsp?EID=305689

I received this answer from Bill Shannon, one of the authors to JavaMail:




http://www.innovation.ch/java/ntlm.html




No. Those files should not be in your source tree. You should use mail.jar directly, not extract the pieces of it.

When connecting to a POP inbox, I keep getting a "pop lock busy! Is another session active?" message. What's wrong?Location: http://www.jguru.com/faq/view.jsp?EID=312860 Created: Jan 25, 2001 Modified: 2001-01-25 19:08:22.002Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by watsawee san (http://www.jguru.com/guru/viewbio.jsp?EID=310877

POP only supports having one reader/writer to the mailbox. If another mail program is reading from the mailbox, you might get this error. Another cause of the error is if your program ran, threw an exception, and didn't properly close the mailbox. In the former case, you'll need to make sure you're not trying to read from multiple places. In the latter case, you'll need to wait for the session to timeout.

What's necessary to setup automated bounce processing?Location: http://www.jguru.com/faq/view.jsp?EID=314965 Created: Jan 29, 2001 Modified: 2001-01-29 07:44:24.916Author: Martin Kuba (http://www.jguru.com/guru/viewbio.jsp?EID=244356) Question originally posed by John Zukowski PREMIUM (http://www.jguru.com/guru/viewbio.jsp?EID=7

Specify a separate mail account in envelope's 'MAIL FROM:' header than in 'From:' header. Then most of bounces will go to the first account, while replies to the second account. (About 1% of bounces will still come to the same account as replies, because of bad implementations of SMTP servers.)

To set the envelope header you will need JavaMail v1.2 or newer, set it using mail.smtp.from property, as is described in another answer.

Use VERPs to track which bounce belongs to which email.

You may want to use similar technique as ezmlm-weed for differenciating real bounces from delay notifications, replies from vacation autoresponders and another junk.

How can I maintain the session-specific Transport / Store objects across multiple HTTP requests, Sun's implementations aren't serializable?Location: http://www.jguru.com/faq/view.jsp?EID=319276 Created: Feb 2, 2001 Modified: 2001-02-02 10:21:42.184Author: Dieter Wimberger (http://www.jguru.com/guru/viewbio.jsp?EID=25708) Question originally posed by Mark K (http://www.jguru.com/guru/viewbio.jsp?EID=302688

If you are using a Java server side solution, like the JSDK (which I suppose) then you can store/retrieve the references in/from the HTTPSession object which you can get from the incoming HttpRequest object.




http://www.ezmlm.org/faq-0.40/FAQ-4.html#ss4.9









For an example implementation you might want to take a look at: http://www.sourceforge.net/projects/jwebmail and/or http://www.sourceforge.net/projects/jwma

Both are open source webmail solutions written in Java.

How does one restore mail whose flag has set to deleted (unset the delete FLAG)?Location: http://www.jguru.com/faq/view.jsp?EID=322642 Created: Feb 6, 2001 Modified: 2001-02-07 04:35:58.99Author: Tony Tjia (http://www.jguru.com/guru/viewbio.jsp?EID=305435) Question originally posed by Tony Tjia (http://www.jguru.com/guru/viewbio.jsp?EID=305435

You can set the delete flag to false as follow.message.setFlag(Flags.Flag.DELETED, false);

How do I delete a folder with IMAP4? Must I get the folder with getFolder() before deleting?Location: http://www.jguru.com/faq/view.jsp?EID=325993 Created: Feb 11, 2001 Modified: 2001-02-11 18:45:23.163Author: Dieter Wimberger (http://www.jguru.com/guru/viewbio.jsp?EID=25708) Question originally posed by Tony Tjia (http://www.jguru.com/guru/viewbio.jsp?EID=305435

Yes, you have to get the folder first. Here a small code snippet://I suppose some existing reference to the storeprivate Store myStore;

[...]String path="mail/aFolder";Folder afolder=myStore.getFolder(path);if(afolder.exists() && !afolder.isOpen()) {

//the true will recurseafolder.delete(true);

}[...]

You should be sure the folder exists, and the operation performs only on a closed folder. However, I suggest anyway to consult the API docs about the implications of the delete(). javax.mail.Folder

public abstract boolean delete(boolean recurse) throws MessagingException

I get a SendFailedException: 550 Invalid Address even when i set the "mail.smtp.from" property. How can I tell it to ignore invalid addresses and send to the rest?Location: http://www.jguru.com/faq/view.jsp?EID=325996 Created: Feb 11, 2001 Modified: 2002-03-30 20:45:54.442Author: Dieter Wimberger (http://www.jguru.com/guru/viewbio.jsp?EID=25708) Question originally posed by Asif Riaz (http://www.jguru.com/guru/viewbio.jsp?EID=296693










http://www.sourceforge.net/projects/jwma

http://www.sourceforge.net/projects/jwebmail

The SendFailedException API documentation is explicit about your problem:"The exception includes those addresses to which the message could not be sent as well as the valid addresses to which the message was sent and valid addresses to which the message was not sent."

This implies that the message will be send to any valid address and the SendFailedException will allow you to figure out the valid (which got the message) and the invalid addresses.

Also, look at the property mail.smtp.sendpartial : "If set to true, and a message has some valid and some invalid addresses, send the message anyway, reporting the partial failure with a SendFailedException. If set to false (the default), the message is not sent to any of the recipients if there is an invalid recipient address. "

You can use

props.put("mail.smtp.sendpartial",true)

If that too fails, check your server setup.

You can also catch SendFailedException, and re-send to the addresses returned by sfe.getValidUnsentAddresses() .

After open a folder with IMAP server, do I need to close the connection/store before I open another folder? After I open a few folders, the connection/user pool of the IMAP server is full and all request was rejected by the IMAP server.Location: http://www.jguru.com/faq/view.jsp?EID=325997 Created: Feb 11, 2001 Modified: 2001-02-11 19:15:31.128Author: Dieter Wimberger (http://www.jguru.com/guru/viewbio.jsp?EID=25708) Question originally posed by Tony Tjia (http://www.jguru.com/guru/viewbio.jsp?EID=305435

Basically you do not need to close a connection/store before you open another folder, but there are certain constraints that come from the provider implementation you are using.

In general taking care about resources is not a bad idea, open folders just when you need them (with the right mode), and close them whenever you don't need them any longer.

Especially when writing, because most likely implementations allow multiple readers, but only one writer.

Why can't I open an IMAP folder in READ_WRITE mode at the same time as having Netscape Communicator running (in IMAP mode)? I understand that Netscape must have a lock on the folder, but how is it that other clients can do it, like Netscape and Outlook? Is there any way of doing this? Location: http://www.jguru.com/faq/view.jsp?EID=325998 Created: Feb 11, 2001 Modified: 2001-02-11 19:12:14.223Author: Dieter Wimberger (http://www.jguru.com/guru/viewbio.jsp?EID=25708)






Question originally posed by Phillip Beauvoir (http://www.jguru.com/guru/viewbio.jsp?EID=222160

Most provider implementations allow multiple readers, but only one writer.Netscape opens the folder in READ_WRITE mode, so if you try to do that too, you will get a MessagingException.You can only open the folder in READ_ONLY or you can try to switch to another provider implementation.However, it is never a good idea to write concurrently to some resource, even with transactions you have to handle lost-update problems bubbling up.

How can I decode a Mail with JavaMail, having an UU-encoded attachment (in a begin .. end section), when part.getContentType() returns "text/plain"? I.e. there are no MIME-Types specified. The mail content is like:

from: [email protected]: [email protected]: uuencodetest

Hello,this is auu-decode test!

begin 600 attachment.txt,:&%L;&\@:VQA=7,*`end

Location: http://www.jguru.com/faq/view.jsp?EID=325999 Created: Feb 11, 2001 Modified: 2001-02-11 19:13:35.01Author: Dieter Wimberger (http://www.jguru.com/guru/viewbio.jsp?EID=25708) Question originally posed by Klaus Battlogg (http://www.jguru.com/guru/viewbio.jsp?EID=249705 You can try to process the plain text message by matching the start and end tokens within it. A pattern matching toolkit (see jakarta.apache.org), and a few code as glue will manage to extract the embedded attachment into a buffer.Once that is achieved, you can decode it (see public static java.io.InputStream decode(java.io.InputStream is, java.lang.String encoding)throws MessagingException, supports "uuencode") and display it or save it to a file or whatever.

How do I connect to an IMAP server over an SSL connection?Location: http://www.jguru.com/faq/view.jsp?EID=329193 Created: Feb 14, 2001 Modified: 2001-02-14 12:13:59.974Author: allen petersen (http://www.jguru.com/guru/viewbio.jsp?EID=105938) Question originally posed by Chris Sterling (http://www.jguru.com/guru/viewbio.jsp?EID=246502

This really isn't documented even in Sun's unsupported com.sun.mail.* packages, now, is it?








Fortunately,you can figure it out by reading the source code for JavaMail. It turns out that Sun's JavaMail implementation uses a SocketFetcher class which can be configured using the Session's properties. Specifically, you can set the following properties:

<prefix>.socketFactory.class<prefix>.socketFactory.fallback<prefix>.socketFactory.port<prefix>.timeout

where <prefix> is your protocol's property prefix, such as 'mail.imap'. To use the JSSE's SSLSocketFactory to connect to your IMAP store, you'll want to set "mail.imap.socketFactory.class" to "javax.net.ssl.SSLSocketFactory".

Here's a sample class that uses these properties. You'll need the JSSE package installed or in your CLASSPATH for this to work. You'll also need to have an SSL enabled IMAP server (or something like sslwrap running) running with trusted certificates. See the JSSE docs for more information.

public class TestSSL {

public static void main(String[] argv) {// configure the jvm to use the jsse security.java.security.Security.addProvider(new

com.sun.net.ssl.internal.ssl.Provider());

// create the properties for the Sessionjava.util.Properties props = new java.util.Properties();

// set this session up to use SSL for IMAP connectionsprops.setProperty("mail.imap.socketFactory.class",

"javax.net.ssl.SSLSocketFactory");// don't fallback to normal IMAP connections on failure.props.setProperty("mail.imap.socketFactory.fallback", "false");// use the simap port for imap/ssl connections.props.setProperty("mail.imap.socketFactory.port", "993");

// note that you can also use the defult imap port (including the

// port specified by mail.imap.port) for your SSL port configuration.

// however, specifying mail.imap.socketFactory.port means that,// if you decide to use fallback, you can try your SSL

connection// on the SSL port, and if it fails, you can fallback to the

normal// IMAP port. try { // create the Session javax.mail.Session session =

javax.mail.Session.getInstance(props); // and create the store.. javax.mail.Store store = session.getStore(new

javax.mail.URLName("imap://mailtest:mailtest@localhost/"));

// and connect. store.connect(); System.out.println("connected to store.");} catch (Exception e) { System.out.println("caught exception: " + e); e.printStackTrace();}

}}Comments and alternative answers

POP3 and SSL without checking for valid certificate Author: Cordelia Sommhammer (http://www.jguru.com/guru/viewbio.jsp?EID=441914), Jun 20, 2001First of all: It works for POP3 Connections over SSL too. Thanx for the useful hint.

But: My POP3S-Server doesn't have trusted certificates, and for I only want to use the SSL- layer to encrypt the password while connecting, I'd like to tell the Socket not to check Certificates. It seems, that there is no (documented) possibility to pass any options to the Socket created by SSLSocketFactory.

Any idea how to solve this problem?

Re: POP3 and SSL without checking for valid certificate Author: Donal Tobin (http://www.jguru.com/guru/viewbio.jsp?EID=47226), Aug 28, 2001This is not a general solution but it will work for the case of a small number of machines. The trick is to add the cert on the trusted root list for yur JVM. I have done this for our internal developement HTTPS servers with developement certs, so it works. However I do not remember the exact steps at this stage. If you are really having trouble get back to me. Basically get the .cert file from the POP server and put it on the JVM machine. Sun have a security tool that will import from that .cert file to a Java Format. You then add the contents of that file to the root certs file for the JVM. The sun site tells you all the steps in the JDK tools (security) documentation.

Re: Re: POP3 and SSL without checking for valid certificate Author: Srikanth V (http://www.jguru.com/guru/viewbio.jsp?EID=490287), Sep 4, 2001Hello, I'm trying to connect to an IMAP email server through SSL. I have tryed to run the code given above. The command I'm using to run is

java -Djavax.net.ssl.trustStore=.keystore SSLEmail

I'm getting the following exception.

caught exception: javax.mail.MessagingException: Couldn't connect using "javax.net.ssl.SSLSocketFact ory" socket factory to host, port: imap.server.com, 993; nested exception is: java.io.IOException: Couldn't connect using "javax.net.ssl.SSLSocketFactory" socket factory to host, port: imap.server.com, 993 javax.mail.MessagingException: Couldn't connect using "javax.net.ssl.SSLSocketFactory" socket factor y to host, port: imap.server.com, 993; nested exception is: java.io.IOException: Couldn't connect using "javax.net.ssl.SSLSocketFactory" socket factory to host, port: imap.server.com, 993 at com.sun.mail.imap.IMAPStore.protocolConnect(IMAPStore.java:145) at javax.mail.Service.connect(Service.java:227) at javax.mail.Service.connect(Service.java:131) at javax.mail.Service.connect(Service.java:87) at devcon.test.SSLEmail.main(SSLEmail.java:54) could you please tell me how you solved the problem in the past. appreciate any help. thanks

Re: Re: Re: POP3 and SSL without checking for valid certificate Author: Donal Tobin (http://www.jguru.com/guru/viewbio.jsp?EID=47226), Sep 5, 2001try setting "java.protocol.handler.pkgs" as well, it is usually equal to "com.sun.net.ssl.internal.www.protocol" if you have the sun JSSE "jnet.jar", "jcert.jar", and "jsse.jar" installed. Or put this in your code. Security.addProvider(new com.sun.net.ssl.internal.ssl.Provider());System.setProperty("java.protocol.handler.pkgs","com.sun.net.ssl.internal.www.protocol");

Heres a link JSSE that may be of use.

security certificates problem Author: Samir Kuthiala (http://www.jguru.com/guru/viewbio.jsp?EID=475549), Aug 13, 2001

i tried ur code. however i am unable to connect to my imap server. it gives me an error saying untrusted certificates. i understad this arises because jsee supports less certificates than ie. but is there any way around this problem? by turning off checking for site certs or manually installing the security cert?

pls let me [email protected]

Re: security certificates problem Author: Saku Laitinen (http://www.jguru.com/guru/viewbio.jsp?EID=546516), Nov 13, 2001

http://www.onjava.com/pub/a/onjava/2001/05/03/java_security.html?page=4

You can get rid of this problem by creating you own SocketFactory that uses a DummyTrustManager that will accept any cert.

* WARNING * this solution will accept absolutely ANY cert.

Of course you can write more intelligense into your TrustManager.

...and then when creating the connection to the mailserver

props.setProperty("mail.imap.socketFactory.class", "MySocketFactory");

Re[2]: security certificates problem Author: Srinivas Kusuname (http://www.jguru.com/guru/viewbio.jsp?EID=847037), Apr 20, 2002How should i access the IMAP for which SSL is enabled? I am calling it like this

javax.mail.URLName("imap://imap.myserver.net/");

But with this iam getting following error:

caught exception: javax.mail.AuthenticationFailedException javax.mail.AuthenticationFailedException at javax.mail.Service.connect(Service.java:265)at javax.mail.Service.connect(Service.java:135)at javax.mail.Service.connect(Service.java:87)at TestSSL.main(TestSSL.java:43)

I am sure there is something missed in my IMAP call. Any help could be appreciated.

Thanks-srini

Re[3]: security certificates problem Author: Rainer TRAFELLA (http://www.jguru.com/guru/viewbio.jsp?EID=834944), Sep 18, 2002

I don't know much about the JavaMail API, but for IMAP over SSL you have to connect to Port 993 on your IMAP Server and not to the default Port 143 for standard IMAP.

Hope this helps!

Best regards,Rainer

How-To connect without worrying about certificates Author: Dieter Wimberger (http://www.jguru.com/guru/viewbio.jsp?EID=25708), Jun 7, 2004It is possible to circumvent the certificate problem following the instructions outlined by:http://www.javaworld.com/javatips/jw-javatip115.html

Basically you need to create a dummy wrapper for the SSL Socket Factory, which utilizes a dummy TrustManager that returns true for any check.

See article for details, it is actually a complete answer for this FAQ question.

Regards,Dieter

When sending an attachment with JavaMail, I don't want the attachment to have the full directory path from the source. How do I shorten the name associated with the attachment?Location: http://www.jguru.com/faq/view.jsp?EID=333116 Created: Feb 19, 2001 Modified: 2001-02-19 07:48:42.224Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by guruprasad vyapaka (http://www.jguru.com/guru/viewbio.jsp?EID=302341

The MimeBodyPart class has a setFileName() method that allows you to specify any text you want. Just set it to the name of the FileDataSource: MimeBodyPart mbp = new MimeBodyPart();FileDataSource fds = new FileDataSource("c:/temp/foo.jpg");mbp.setFileName(fds.getName());

When using JavaMail I get an NoSuchField exception on the getContentStream() method / contentStream field of MimeMessage. What's wrong? Location: http://www.jguru.com/faq/view.jsp?EID=333721 Created: Feb 19, 2001 Modified: 2001-02-19 22:03:00.069Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by naveen kumar.v (http://www.jguru.com/guru/viewbio.jsp?EID=321080







The contentStream field was added to JavaMail 1.2. Apparently, you are trying to run a 1.2 program with the 1.1 JavaMail classes.

If I set the host and user properties before calling getDefaultInstance() are those properties used for all successive gets to Store or Transport objects?Location: http://www.jguru.com/faq/view.jsp?EID=337080 Created: Feb 23, 2001 Modified: 2001-02-23 13:06:09.721Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by Rick DeGrande (http://www.jguru.com/guru/viewbio.jsp?EID=333396

The properties passed into the getDefaultInstance() method are only referenced if the method creates the session object, essentially only the first time. Future calls to the method will ignore the argument. These properties are then used by anything created off the session.

Do I need an SMTP server when using JavaMail?Location: http://www.jguru.com/faq/view.jsp?EID=339926 Created: Feb 27, 2001 Modified: 2001-02-27 04:58:22.684Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by David Ha (http://www.jguru.com/guru/viewbio.jsp?EID=50426

JavaMail still needs an SMTP server. The API comes with an SMTP provider (in smtp.jar for JavaMail 1.2). The provider provides access to YOUR SMTP server.

How can I retrieve a list of UIDs from the mail server for POP3 with JavaMail?Location: http://www.jguru.com/faq/view.jsp?EID=340261 Created: Feb 27, 2001 Modified: 2001-02-27 12:52:33.894Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by Roger Hansson (http://www.jguru.com/guru/viewbio.jsp?EID=277866

Use the fetch() method to prefetch information. If the FetchProfile contains UIDFolder.FetchProfileItem.UID, POP3 UIDs for all messages in the folder are fetched using the POP3 UIDL command. If the FetchProfile contains FetchProfile.Item.ENVELOPE, the headers and size of all messages are fetched using the POP3 TOP and LIST commands.

See the sundocs for the Pop3Folder for more information. [javamail-1.2/docs/sundocs/com/sun/mail/pop3/POP3Folder.html#fetch]. These are provided with the JavaMail 1.2 release.

How can I include a multi-line message in a mailto: URL?Location: http://www.jguru.com/faq/view.jsp?EID=341038 Created: Feb 28, 2001 Modified: 2001-03-01 21:01:47.491Author: Jayesh Nazre (http://www.jguru.com/guru/viewbio.jsp?EID=44356) Question originally posed by John Zukowski PREMIUM (http://www.jguru.com/guru/viewbio.jsp?EID=7

Well you have to pass the parameter "body" a value.













To embed your message completely in your HTML page, you'll need to use JavaScript's escape() method to convert the text with new lines to something that can be used in a mailto URL.

<html><head><script language=javascript>

function send() { var lstr_data = "FIRST LINE" + "\n" + "SECOND LINE" + "\n" + "THIRD LINE"; window.location.href="mailto:[email protected]" + "?body=" + escape (lstr_data);}</script></head><body>

<a href="javascript:send();">Send Message</a></body></html>

Instead, you can get the message from a TextArea on the page...

<html><head><script language=javascript>function send() {

window.location.href="mailto:[email protected]" + "?body=" + document.frm_test.ta_body.value;

}</script></head><body>

<form id=frm_test name=frm_test>

Mail Contents:

<TEXTAREA NAME=ta_body ROWS="6" COLS="55">HELLO1HELLO2</TEXTAREA>

<input type=button value=SendMail onclick=send()></form></body></html>Note if you need to specify the subject then u need to pass the parameter "subject" like this

window.location.href="mailto:[email protected]" + "?subject=" + "TEST MAIL";

How can I access MS Exchange Public Folders using JavaMail? Is it supported?Location: http://www.jguru.com/faq/view.jsp?EID=343803 Created: Mar 3, 2001 Modified: 2001-03-05 07:25:37.99Author: Ivo Limmen (http://www.jguru.com/guru/viewbio.jsp?EID=327483) Question originally posed by Jack Leung (http://www.jguru.com/guru/viewbio.jsp?EID=13166

Since there isn't any package written in Java to connect and use Microsoft Exchange data you will have to manually connect with the Exchange server throught Sockets and use the Microsoft Exchange protocol (IMAP) to extract the data from the database. So to answer your second question "Is it supported?" I will have to say "not directly.". To get information about programming Exchange look here.Comments and alternative answers

Exchange supports the IMAP protocol. So using the Sun... Author: Loubaresse francois (http://www.jguru.com/guru/viewbio.jsp?EID=335699), Mar 16, 2001Exchange supports the IMAP protocol. So using the Sun provided IMAP provider, you can access public folders on the exchange server - no problem. It's supported by MS on the exchange end, and (I assume) by Sun for the IMAP JavaMail provider...and it works too, I've tried it.

Re: Exchange supports the IMAP protocol. So using the Sun... Author: challey shin (http://www.jguru.com/guru/viewbio.jsp?EID=832206), Aug 4, 2002it works very well....!!! look following code... ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ :Folder publicFolder = store.getFolder("Public Folders/");Folder[] folders = publicFolder.list("*");

:~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

"folders" is public folders of exchange server... That`s all !!! Good luck and Have a nice day!!!

Re[2]: Exchange supports the IMAP protocol. So using the Sun... Author: Devadas Bhukya

http://msdn.microsoft.com/exchange/




(http://www.jguru.com/guru/viewbio.jsp?EID=1069111), Mar 24, 2003Hi Iam unable to access the access the public folders even after using the following code, Store store = session.getStore("imap"); store.connect(host, username, password); Folder publicFolder = store.getFolder("Public Folders/"); Folder[] folders = publicFolder.listSubscribed("*"); Any one can has solution. Deva

Re[3]: Exchange supports the IMAP protocol. So using the Sun... Author: Devadas Bhukya (http://www.jguru.com/guru/viewbio.jsp?EID=1069111), Mar 24, 2003Store store = session.getStore("imap"); store.connect(host, username, password); Folder publicFolder = store.getFolder("Public Folders/"); Folder[] folders = publicFolder.list("*"); not working unable to access public folder any help

How can I serialize a JavaMail Message?Location: http://www.jguru.com/faq/view.jsp?EID=345906 Created: Mar 6, 2001 Modified: 2002-01-07 10:24:05.348Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by Eric Rapp (http://www.jguru.com/guru/viewbio.jsp?EID=345778

You can't. As messages are associated with folders which are associated with sessions, Message objects are considered not serializable. Like threads and images you need to save the pieces that are not session-specific and regenerate the object at the other end. Save the contents to an RFC 822 formatted stream (message.writeTo()), serialize the bytes, and recreate the message at the other end.

How do I correct getting a SendFailedException, 553 NOT A LOCAL DOMAIN error?Location: http://www.jguru.com/faq/view.jsp?EID=352951 Created: Mar 16, 2001 Modified: 2001-03-16 07:11:20.599Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by bhavesh desai (http://www.jguru.com/guru/viewbio.jsp?EID=344539

This error has to do with the configuration of your mail server and has nothing to do with how you are using the JavaMail API. Correct the mail server configuration and your program will work fine.

How to configure your mail server depends on what mail server you are using.

If I can't change my mail server configuration, how can I get around problems about no permission to relay and not a local domain errors?Location: http://www.jguru.com/faq/view.jsp?EID=379908 Created: Mar 17, 2001 Modified: 2001-03-18 06:28:40.985Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by John Zukowski PREMIUM (http://www.jguru.com/guru/viewbio.jsp?EID=7










You can manually lookup the MX record of the recipient with tools like MXLookup and connect directly to the recipient's SMTP server, instead of your own.Comments and alternative answers

Search MX records of the recipient's is not a good idea! Author: Andriano Franck (http://www.jguru.com/guru/viewbio.jsp?EID=703045), Dec 16, 2002Since 1998 IN A records is enough, so some domains don't have MX records like altern.org...

See RFC...

Best regards,

/Franck

How can I send a message with multiple from fields?Location: http://www.jguru.com/faq/view.jsp?EID=379997 Created: Mar 18, 2001 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by John Zukowski PREMIUM (http://www.jguru.com/guru/viewbio.jsp?EID=7

Instead of using setFrom(), use addFrom(). This takes an array of Address objects.

How do you get JavaMail to tell SMTP to send the domain name along with the HELO command to avoid a MessagingException "501 HELO requires domain address"?Location: http://www.jguru.com/faq/view.jsp?EID=380341 Created: Mar 18, 2001 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by David Chen (http://www.jguru.com/guru/viewbio.jsp?EID=334324

From Sun's JavaMail FAQ: The SMTP provider uses the results of InetAddress.getLocalHost().getHostName() in the SMTP HELO command. If that call fails to return any data, no name is sent in the HELO command. Check your JDK and name server configuration to ensure that that call returns the correct data. Starting with JavaMail 1.1.3, you may also set the mail.smtp.localhost property to the name you want to use for the HELO command.

I have a mail message with only a attachment. No body part. How can I check the MIME type of that mail?Location: http://www.jguru.com/faq/view.jsp?EID=383140 Created: Mar 20, 2001 Author: Michael Dailous (http://www.jguru.com/guru/viewbio.jsp?EID=381385) Question originally posed by chandi hettiaratchi (http://www.jguru.com/guru/viewbio.jsp?EID=349311










http://www.theorem.com/java/index.htm

Generally speaking, any email message that contains an attachment is encoded as a multipart/* email message. Even if there is no main "body" part, the email is still encoded as a multipart/* email message. You would process each part of the message just as you would any other multipart/* message. Here's a quick snippet of code that'll go through as many levels of multipart/* sections as available (NOTE: This is a _quick_ code snippet and does not do any error detection/correction): // create a session// connect to the store// open the folder// get the messagegetPartMimeType(message.getContent());

public void getPartMimeType(Part p) { if (p.isMimeType("multipart/*")) { Multipart mp = (Multipart)p.getContent(); for (int x = 0; x < mp.getCount(); x++) { if (mp.getBodyPart(x).isMimeType("multipart/*")) { getPartMimeType(mp.getBodyPart(x).getContent()); } else { System.out.println(mp.getBodyPart(x).getContentType()); } } } else { // you should do more granular checking of other mime-types System.out.println(p.getContentType()); } }This should print out the MIME type of each part of the email message, no matter how many multipart/* parts there are.

If you'd like to determine the MIME type of just the first attachment, you could modify the above code snippet as follows:

// create a session// connect to the store// open the folder// get the messagegetAttachmentMimeType(message.getContent());

public void getAttacheMimeType(Part p) { if (p.isMimeType("multipart/*")) { Multipart mp = (Multipart)p.getContent(); for (int x = 0; x < mp.getCount(); x++) { if (mp.getBodyPart(x).isMimeType("multipart/*")) { getAttachmentMimeType(mp.getBodyPart(x).getContent()); } else { if (checkAttachment(mp.getBodyPart(x).getDisposition())) { System.out.println(mp.getBodyPart(x).getContentType()); break; } } } } else {

// you should do more granular checking of other mime-types if (checkAttachment(p.getDisposition())) { System.out.println(p.getContentType()); } } }

public boolean checkAttachment(String disposition, String contentType) { if (disposition != null && disposition.equalsIgnoreCase(Part.ATTACHMENT)) { return true; } return false;}Comments and alternative answers

The above answer is completely misleading Author: Abid Farooqui (http://www.jguru.com/guru/viewbio.jsp?EID=325097), Jun 19, 2001Saying that any email message that conatins an attachment is encoded as a multipart/* is wrong, specially when there is no body whatsoever in the e-mail. I have had this trouble and I followed this strategy (no thanks to JGURU FAQ here) and had to re-write and rethink my code to automate processing of attachments in my code. I'll simply quote Bill Shanon's answer from the Sun JavaMail team to my problem here:

"I don't know what requirements you've placed on the clients that send you the attachments. If there is no requirement for a "main text body" in addition to the "attachment", it's quite reasonable for someone to send you a message that contains only the attachment, in which case it might not show up as a multipart message - there is only one part after all. If you consider this case legitimate, then your program needs to be smart enough to handle it.

Things you might want to check for to indicate that a message contains a part you need to process are:Content-Disposition of "attachment" filename ending in ".csv" Content-Type of application/octet-stream If the same mailbox can contain other messages with arbitrary data that you're not supposed to process, you might have to resort to reading the attached data in some cases to make sure it's really the special data you're expecting. Largely this comes down to what requirements you've placed on people who send messages to this mailbox. What you're seeing is legal MIME."

This FAQ and the tutorial presented by JGuru really does not handle processing of the attachment(s) well if you are writing a POP3 client or similar. In my case I was getting messages that simply said that the content-type = application/octetstream, content-disposition = attachment and filename = something and then simply there was Base64 encoded file attachment there. There was no multipart anywhere and that is considered legal MIME. If I were you, I would not go by this answer at all.

Re: The above answer is completely misleading Author: Abid Farooqui (http://www.jguru.com/guru/viewbio.jsp?EID=325097), Jun 19, 2001I guess I should give some pointers as to where you can check and code for scenarios that are not civered by the above example

Basically you would have some code here: else {// you should do more granular checking of other mime-typesif (checkAttachment(p.getDisposition())) {System.out.println(p.getContentType());// this right here would be the attachment in the case that I// encountered and described in my previous post. Handle the attachment as// you would handle an attachment from the multipart/* here }

Re: Re: The above answer is completely misleading Author: Satyamoorthy Vasudevan (http://www.jguru.com/guru/viewbio.jsp?EID=512831), Oct 6, 2001I tried to access a mail that had only the attachment with no main text , that is only one body part as attachment. Now when try to get the Multipart Object I get the ClassCastException. I tried Multipart multipart = (Multipart)message[i].getContent(); and Part part = (Part)message[i].getContent(); both did not work

Re[3]: The above answer is completely misleading Author: Subhash Agrawal (http://www.jguru.com/guru/viewbio.jsp?EID=577320), Dec 8, 2001As the message has only one attachment without content type of multipart/* so you can not casr it to Multipart.If u try it will give classcastexception. The best way is to check content type and then do casting if required. I also got same problem

Re[2]: The above answer is completely misleading Author: Subhash Agrawal (http://www.jguru.com/guru/viewbio.jsp?EID=577320), Dec 8, 2001My problem is almost same but I am still struggling. Thing is that my forwarded message(RFC822 type) has only one attachment(WAV file) content type of AUDIO/WAV rather than multipart/*. Now when I am getting content of this message and playing it , it does not play. player says "Not an audio/wavform file". When I open same message in outlook express/netscape messanger, it plays that attachment. When I checked the size of both wav file(one downloaded by my mail client and other client) there is few byte difference. But the strange thing is that when I get message with content type of multipart/* with one attachement(Wav file) then my email client can play that with no problem. Any thought ????

Re[3]: The above answer is completely misleading Author: Abid Farooqui (http://www.jguru.com/guru/viewbio.jsp?EID=325097), Dec 8, 2001Subhash, I think your problem is slightly different than the subject being discussed here. The difference primarily lies in the fact that even though you seem to get the part even if it is not a multipart/* content type, it does not seem to be correct whereas, we were discussing not even being able to get the part as attachment because it won't be recognized as attachment but simply as a body part.Anyway, I would suggest these things.1) After you get the supposed attachment (wav file), just put a few hundread bytes (of the beggining) in a byte array and print them out. Then also open your same exact wav file that you get in outlook express not in a wav player but in "wordpad" (hopefully you will use a wav file that is not too huge) and see if the first few hundread bytes seem to be the same as what you printed out from your code. I bet they are not and that you are actually not grabbing the attachment correctly when the attachment does not come in a multipart/* content type.2) Instead of wav files send other simpler forms like a text file without a multipart/* content-type and see if that seems to act fine.Hopefully these pointers will help you determine exactly what is going on.

When reading mail, how do I get just the message content without the headers?Location: http://www.jguru.com/faq/view.jsp?EID=386687 Created: Mar 25, 2001 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by bhavesh desai (http://www.jguru.com/guru/viewbio.jsp?EID=380408

Use the getContent() method of the MimeMessage class to get the content, excluding headers.

Why does folder.list() throw a MessagingException: not a directory with POP3?Location: http://www.jguru.com/faq/view.jsp?EID=387164 Created: Mar 26, 2001 Modified: 2001-03-27 08:50:14.85Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by A Java Programmer (http://www.jguru.com/guru/viewbio.jsp?EID=384596

POP only supports a single folder, the INBOX.

How do I use the JavaMail API to send newsgroups messages? Location: http://www.jguru.com/faq/view.jsp?EID=393015 Created: Apr 2, 2001 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question









originally posed by Francesco Marchioni (http://www.jguru.com/guru/viewbio.jsp?EID=59707

You need to get an NNTP provider, like Knife's. You must manually create an instance of their NNTP Transport object to send the message as well as specify the newsgroup to post to.

The following program does just that.

import javax.mail.*;import javax.mail.internet.*;

public class PutNewsExample { public static void main (String args[]) throws Exception { String host = args[0]; String from = args[1]; String newsgroup = args[2]; String username = args[3]; String password = args[4];


// Define message MimeMessage message = new MimeMessage(session); message.setFrom(new InternetAddress(from)); message.setSubject("Test Test - Ignore"); message.setText("Will this work?"); message.addHeader("Newsgroups", newsgroup);

// Define transport Transport transport = new dog.mail.nntp.NNTPTransport(session, new URLName("news:" + newsgroup));

transport.connect(host, username, password); transport.sendMessage(message, message.getAllRecipients());

transport.close(); }}Comments and alternative answers

http://www.dogandh.demon.co.uk/knife/


Alternate solution Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7), Apr 3, 2001If you don't mind adding an entry with "protocol=nntp; type=transport;..." in your javamail.providers file.... you can use the following code instead:

import javax.mail.*; import javax.mail.internet.*; public class PutNewsExample { public static void main (String args[]) throws Exception { URLName url = new URLName(args[0]); Address from = new InternetAddress(args[1]); // Get session and transport Session session = Session.getInstance( System.getProperties(), null); Transport transport = session.getTransport(url); // Define message MimeMessage message = new MimeMessage(session); message.setFrom(from); message.addRecipients( MimeMessage.RecipientType.NEWSGROUPS, url.getFile()); message.setSubject("Test Test - Ignore"); message.setText("Will this work?"); transport.connect(); transport.sendMessage(message, message.getAllRecipients()); transport.close(); } }This can be invoked something like

java PutNewsExample nntp://me:mypass@news/alt.test me@home

Does the Transport.send() method block until the STMP mail transaction is completed?Location: http://www.jguru.com/faq/view.jsp?EID=403798 Created: Apr 16, 2001 Author: Michael Wax (http://www.jguru.com/guru/viewbio.jsp?EID=242559)



Question originally posed by Ed Borejsza (http://www.jguru.com/guru/viewbio.jsp?EID=391155

The Sun SMTPTransport class does block. Further, the JavaMail Guide for Service Providers also does not specify that the send method not block. Therefore, if you are concerned that you might not get a timely return, you would be prudent to spawn a new thread.

Are there any online tutorials on the JavaMail API?Location: http://www.jguru.com/faq/view.jsp?EID=407606 Created: Apr 21, 2001 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by John Zukowski PREMIUM (http://www.jguru.com/guru/viewbio.jsp?EID=7

jGuru created a JavaMail tutorial for Sun's Java Developer Connection.Comments and alternative answers

Re. javamail API Author: John Norgaard (http://www.jguru.com/guru/viewbio.jsp?EID=331034), May 6, 2001Here are a few articles/tutorials: http://www.jspinsider.com/beans/beans/email/BeanMailer/index.html http://developer.java.sun.com/developer/onlineTraining/JavaMail/ - and the specifications/FAQ: http://softwarema.usec.sun.com/products/javamail/

How do I use the Yahoo SMTP server to send mail with the JavaMail API?Location: http://www.jguru.com/faq/view.jsp?EID=407686 Created: Apr 22, 2001 Modified: 2002-03-30 21:21:04.711Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by Ashwin Parmar (http://www.jguru.com/guru/viewbio.jsp?EID=393164

From your Yahoo mail account, you need to enable POP Access and Forwarding. Select Options in the left gutter, then POP Access & Forwarding under Mail Management. You need to have Web and POP Access enabled. This is not a free service. You then MUST use your Yahoo address as the FROM address when sending the message. The basic mail sending program with authentication is sufficient. import java.util.Properties;import javax.mail.*;import javax.mail.internet.*;

public class MailExample { public static void main (String args[]) throws Exception { String smtpHost = "smtp.mail.yahoo.com"; String popHost = "pop.mail.yahoo.com"; String from = args[0]; // with @yahoo.com String to = args[1]; String username = args[2]; String password = args[3];




http://developer.java.sun.com/developer/onlineTraining/JavaMail/






// Setup mail server props.put("mail.smtp.host", smtpHost);

// Get session Session session = Session.getDefaultInstance(props, null); session.setDebug(true);

// Pop Authenticate yourself Store store = session.getStore("pop3"); store.connect(popHost, username, password);

// Define message MimeMessage message = new MimeMessage(session); message.setFrom(new InternetAddress(from)); message.addRecipient(Message.RecipientType.TO, new InternetAddress(to)); message.setSubject("Hello JavaMail"); message.setText("Welcome to Yahoo's JavaMail");

// Send message Transport.send(message); }}Note: Previously, POP authentication was required. That is no longer the case.Comments and alternative answers

how to solve client authentication Author: sally neysky (http://www.jguru.com/guru/viewbio.jsp?EID=1012714), Oct 16, 2002Note: Previously, POP authentication was required. That is no longer the case. how to solve client authentication

How can I include an attachment-file (for example a txt-file) in a mailto-URL?Location: http://www.jguru.com/faq/view.jsp?EID=413063 Created: May 1, 2001 Author: Luigi Viggiano (http://www.jguru.com/guru/viewbio.jsp?EID=101985) Question originally posed by Osman Bulut (http://www.jguru.com/guru/viewbio.jsp?EID=350783

You cannot. In a mailto URL you can specify the target and a subject, attachments are not supported (and it would be a security problem if this were).

How can I add the javamail.providers in the META/INF dir in a signed jar? I want to add my own pop3 Provider to my signed app. I use signtool create a signed jar file with a manifest file. Now I have to add the javamail.providers file in the META/INF dir in the jar package for using my own pop3 stuff. When I use jar, i can not add it without destroying my signature. What are the ways to do that ?




Location: http://www.jguru.com/faq/view.jsp?EID=426874 Created: May 23, 2001 Author: Alex [missing] (http://www.jguru.com/guru/viewbio.jsp?EID=425187) Question originally posed by Alex [missing] (http://www.jguru.com/guru/viewbio.jsp?EID=425187

Have found it by myself. make a Dir with the name META-INF and put the provider file in it. then just: jar -uf app.jar META-INF/javamail.providersthe signature will not been destroyed (plugin fell fine)

How can I send a mail message with multiple lines in the body?Location: http://www.jguru.com/faq/view.jsp?EID=430244 Created: May 29, 2001 Modified: 2002-03-30 21:30:50.677Author: Ivo Limmen (http://www.jguru.com/guru/viewbio.jsp?EID=327483) Question originally posed by Bernd Hülsebusch (http://www.jguru.com/guru/viewbio.jsp?EID=430026

You need to manually add the new lines to the message. Try the following: ...StringBuffer sb = new StringBuffer();

sb.append("This is line 1\n\r");sb.append("This is the second line\n\r");sb.append("...");

msg.setText(sb.toString());...You must use one bodypart with text but the text can contain multiple lines. So you need to use the \r\n.

You can also use String newline = System.getProperty("line.separator"); to get the platform-specific line separator. Keep in mind that if you display the text as HTML, the newline is just white space.

What are the different RFCs for the related JavaMail protocols?Location: http://www.jguru.com/faq/view.jsp?EID=431271 Created: May 30, 2001 Modified: 2001-06-01 13:26:38.617Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by John Zukowski PREMIUM (http://www.jguru.com/guru/viewbio.jsp?EID=7

• SMTP is RFC 821, recently replaced by RFC 2821. • POP3 is RFC 1939. • IMAP4 is RFC 2060. • MIME/message format is covered in RFC 822 (recently replaced by RFC

2822), RFC 2045, RFC 2046, and RFC 2047.

How do I set the character set (charset) for a content type?Location: http://www.jguru.com/faq/view.jsp?EID=434625 Created: Jun 6, 2001


http://www.imc.org/rfc2047



ftp://ftp.isi.edu/in-notes/rfc2822.txt






http://www.cis.ohio-state.edu/htbin/rfc/rfc821.html










Author: Rahul kumar Gupta (http://www.jguru.com/guru/viewbio.jsp?EID=4809) Question originally posed by back hyejin (http://www.jguru.com/guru/viewbio.jsp?EID=235836

You can set the content type of your message like: msg.setContent(message,"text/html;charset=\"UTF-8\"");Comments and alternative answers

alternative? Author: lecanard masque (http://www.jguru.com/guru/viewbio.jsp?EID=522072), Oct 17, 2001what about : msg.setText(text,"UTF-8"); ?

How do I convert a comma delimeted string of email addresses to an array of recipients for a message?Location: http://www.jguru.com/faq/view.jsp?EID=439993 Created: Jun 15, 2001 Author: Travis Polland (http://www.jguru.com/guru/viewbio.jsp?EID=423797) Question originally posed by Travis Polland (http://www.jguru.com/guru/viewbio.jsp?EID=423797

Use the InternetAddress.parse() method: String strName = /* request.getParameter("TO"); */ InternetAddress[] address = InternetAddress.parse(strName); message.setRecipients(Message.RecipientType.TO, address);

How can I send a message to a folder other then the Inbox?Location: http://www.jguru.com/faq/view.jsp?EID=442090 Created: Jun 20, 2001 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by zhou tao (http://www.jguru.com/guru/viewbio.jsp?EID=438817

The sender of a message has no control over what folder the message gets saved in. All new messages appear in Inbox. The recipient's mail server either has to move them, or when the recipient fetches your message, they can move them. As a sender, you can't do anything like that.

Does Sun's IMAP service provider support the IDLE extension?Location: http://www.jguru.com/faq/view.jsp?EID=449276 Created: Jul 3, 2001 Modified: 2001-07-03 17:02:20.428Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by John Zukowski PREMIUM (http://www.jguru.com/guru/viewbio.jsp?EID=7

According to Bill Shannon, primary engineer behind the API, no.

Where can I learn more about the IDLE command for IMAP?Location: http://www.jguru.com/faq/view.jsp?EID=449280 Created: Jul 3, 2001 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question














originally posed by John Zukowski PREMIUM (http://www.jguru.com/guru/viewbio.jsp?EID=7

The IDLE command for IMAP4 is defined in RFC 2177.

Can I use IMAP4 along with POP3?

I'm trying to write a mail-account program and want to connect to an IMAP4 server along with a POP3 server in my program. Whichever one I connect to first works, but I can't connect to the other one then. How do I use them together?Location: http://www.jguru.com/faq/view.jsp?EID=454440 Created: Jul 13, 2001 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by Ilya Egoshin (http://www.jguru.com/guru/viewbio.jsp?EID=453861

Use different session objects (don't use the default). Get the session with Session.getInstance() instead of getDefaultInstance().

Where can I find the documentation for Sun's JavaMail providers?Location: http://www.jguru.com/faq/view.jsp?EID=462336 Created: Jul 25, 2001 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

In the JavaMail 1.2 download, there is a sundocs directory that includes documentation on the IMAP, POP3, and SMTP-specific classes.

What properties are supported by the Sun IMAP provider?Location: http://www.jguru.com/faq/view.jsp?EID=462885 Created: Jul 26, 2001 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

The following is taken from the javadoc files for the com.sun.mail.imap package in JavaMail 1.2:

Name Type Description

mail.imap.user String Default user name for IMAP.

mail.imap.host String The IMAP server to connect to.

mail.imap.port intThe IMAP server port to connect to, if the connect() method doesn't explicitly specify one. Defaults to 143.

mail.imap.partialfetch booleanControls whether the IMAP partial-fetch capability should be used. Defaults to true.

mail.imap.fetchsize int Partial fetch size in bytes. Defaults to 16K.

mail.imap.connectiontimeout intSocket connection timeout value in milliseconds. Default is infinite timeout.

mail.imap.timeout int Socket I/O timeout value in milliseconds.










Default is infinite timeout.

mail.imap.statuscachetimeout intTimeout value in milliseconds for cache of STATUS command response. Default is 1000 (1 second). Zero disables cache.

mail.imap.appendbuffersize int

Maximum size of a message to buffer in memory when appending to an IMAP folder. If not set, or set to -1, there is no maximum and all messages are buffered. If set to 0, no messages are buffered. If set to (e.g.) 8192, messages of 8K bytes or less are buffered, larger messages are not buffered. Buffering saves cpu time at the expense of short term memory usage. If you commonly append very large messages to IMAP mailboxes you might want to set this to a moderate value (1M or less).

mail.imap.connectionpoolsize intMaximum number of available connections in the connection pool. Default is 1.

mail.imap.connectionpooltimeout intTimeout value in milliseconds for connection pool connections. Default is 45000 (45 seconds).

mail.imap.separatestoreconnection booleanFlag to indicate whether to use a dedicated store connection for store commands. Default is false.

What properties are supported by the Sun POP3 provider?Location: http://www.jguru.com/faq/view.jsp?EID=462936 Created: Jul 26, 2001 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

The following is taken from the javadoc files for the com.sun.mail.pop3 package in JavaMail 1.2:


mail.pop3.user String Default user name for POP3.

mail.pop3.host String The POP3 server to connect to.

mail.pop3.port intThe POP3 server port to connect to, if the connect() method doesn't explicitly specify one. Defaults to 110.

mail.pop3.connectiontimeout intSocket connection timeout value in milliseconds. Default is infinite timeout.

mail.pop3.timeout intSocket I/O timeout value in milliseconds. Default is infinite timeout.

mail.pop3.rsetbeforequit boolean Send a POP3 RSET command when closing the



folder, before sending the QUIT command. Useful with POP3 servers that implicitly mark all messages that are read as "deleted"; this will prevent such messages from being deleted and expunged unless the client requests so. Default is false.

mail.pop3.message.class int

Class name of a subclass of com.sun.mail.pop3.POP3Message. The subclass can be used to handle (for example) non-standard Content-Type headers. The subclass must have a public constructor of the form MyPOP3Message(Folder f, int msgno) throws

MessagingException.

What properties are supported by the Sun SMTP provider?Location: http://www.jguru.com/faq/view.jsp?EID=462937 Created: Jul 26, 2001 Modified: 2001-08-19 06:55:22.755Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

The following is taken from the javadoc files for the com.sun.mail.pop3 package in JavaMail 1.2:


mail.smtp.user String Default user name for SMTP.

mail.smtp.host String The SMTP server to connect to.

mail.smtp.port intThe SMTP server port to connect to, if the connect() method doesn't explicitly specify one. Defaults to 25.

mail.smtp.connectiontimeout intSocket connection timeout value in milliseconds. Default is infinite timeout.

mail.smtp.timeout intSocket I/O timeout value in milliseconds. Default is infinite timeout.

mail.smtp.from String

Email address to use for SMTP MAIL command. This sets the envelope return address. Defaults to msg.getFrom() or InternetAddress.getLocalAddress(). NOTE: mail.smtp.user was previously used for this.

mail.smtp.localhost String

Local host name. Defaults to InetAddress.getLocalHost().getHostName(). Should not normally need to be set if your JDK and your name service are configured properly.

mail.smtp.ehlo boolean If false, do not attempt to sign on with the EHLO command. Defaults to true. Normally failure of the EHLO command will fallback to the HELO command; this property exists only for servers that don't fail EHLO properly or don't implement EHLO



properly.

mail.smtp.auth booleanIf true, attempt to authenticate the user using the AUTH command. Defaults to false.

mail.smtp.dsn.notify StringThe NOTIFY option to the RCPT command. Either NEVER, or some combination of SUCCESS, FAILURE, and DELAY (separated by commas).

mail.smtp.dsn.ret StringThe RET option to the MAIL command. Either FULL or HDRS.

mail.smtp.allow8bitmime boolean

If set to true, and the server supports the 8BITMIME extension, text parts of messages that use the "quoted-printable" or "base64" encodings are converted to use "8bit" encoding if they follow the RFC2045 rules for 8bit text.

mail.smtp.sendpartial boolean

If set to true, and a message has some valid and some invalid addresses, send the message anyway, reporting the partial failure with a SendFailedException. If set to false (the default), the message is not sent to any of the recipients if there is an invalid recipient address.

When using JavaMail to encode various header fields and the message body, what can you expect a client to handle on the other end? Which character sets can you expect all commonly used clients to recognize? Which fields will they decode? Do they adhere to the RFC822 and RFC2047 standards?Location: http://www.jguru.com/faq/view.jsp?EID=470776 Created: Aug 7, 2001 Author: Jeff Gay (http://www.jguru.com/guru/viewbio.jsp?EID=468673) Question originally posed by Mitchell Ratisher (http://www.jguru.com/guru/viewbio.jsp?EID=277206

The MIME standards always default to the US English character set; ASCII. If you want to guarantee that the message is going to be readable then use the default; ASCII.

If the mail client is MIME compliant then all fields can be encoded, both delivery and character set.

Where can I learn more about the business and legal issues of bulk mail?Location: http://www.jguru.com/faq/view.jsp?EID=474535 Created: Aug 12, 2001 Author: Dieter Wimberger (http://www.jguru.com/guru/viewbio.jsp?EID=25708) Question originally posed by John Zukowski PREMIUM (http://www.jguru.com/guru/viewbio.jsp?EID=7

One of the resources known to me, that covers the legal issues of this topic to some extent, is http://www.spamlaws.com.

http://www.spamlaws.com/







However, I guess there is too much information out there to be covered by one answer, thus it is maybe best to start and then append other sources by commenting.

How can I get the sender email of the received mail?Location: http://www.jguru.com/faq/view.jsp?EID=477094 Created: Aug 14, 2001 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by krishna kumar (http://www.jguru.com/guru/viewbio.jsp?EID=473175

The getFrom() of Message returns an array. You can't just call aMessage.getFrom().toString().

Does JavaMail support Multipart nesting? When trying to read a "System Administrator" rejection message (w/attachment) from Exchange, the original getContent() returns a Multipart. However in the original message (2nd Part of Multipart) the attachment is lumped in with the Part (text/plain) of the original message. How do I access the attachment in this situation? Location: http://www.jguru.com/faq/view.jsp?EID=478719 Created: Aug 17, 2001 Modified: 2001-11-12 17:06:50.562Author: Dieter Wimberger (http://www.jguru.com/guru/viewbio.jsp?EID=25708) Question originally posed by Sean Hignett (http://www.jguru.com/guru/viewbio.jsp?EID=242642

It is possible to access all the parts of a message, even if they are nested multiparts. One possible approach is to work recursively and "flatten" out the parts into one straight list (this is the one I prefer, even if it does not reflect exactly how the message looks like "architecturally").You start from: [...]if(msg.isMimeType("multipart/*")) { //get main body part Multipart mp=(Multipart)msg.getContent();

//build flatlist List partlist=new ArrayList(10); //example, use your own size idea buildPartInfoList(partlist,mp);}[...]And the recursive method is: [...]private void buildPartInfoList(List partlist, Multipart mp) throws Exception {

for (int i=0; i<mp.getCount(); i++) { //Get part Part apart=mp.getBodyPart(i); //handle single & multiparts if(apart.isMimeType("multipart/*")) { //recurse buildPartInfoList(partlist,(Multipart)apart.getContent()); } else {







//append the part partlist.add(apart); } }}//buildPartList[...]The list partlist will afterwards contain all the parts that have been encountered with the multipart message.

If you do not like this approach, you can easily extract the idea of how to retrieve a specific nested part from the code above.


Is it possible to send Multipart nested messages. Author: Owen Fellows (http://www.jguru.com/guru/viewbio.jsp?EID=489718), Sep 4, 2001I am currently sending a text and html multipart message using the "alternative" sub type in the MimeMultipart. Now i also want to attach an image to the email. The problem is i can't attach the image to the alternative MimeMultipart as it doesn't show. If i remove the "alternative" sub type the text or html attachment shows as well. Is there a solution? Thanks in advance Owen Fellows

Re: Is it possible to send Multipart nested messages. Author: Matt Newberry (http://www.jguru.com/guru/viewbio.jsp?EID=528009), Oct 28, 2001Owen: I think this will answer your question:

http://www.jguru.com/forums/view.jsp?EID=528015

Misinterpretation of Nested Multipart messages Author: Ashok Naidu (http://www.jguru.com/guru/viewbio.jsp?EID=481705), Sep 6, 2001I am able to interprete the nested multipart message, thanx to ur information.But the i am not able to interprete one particular message.this message has nested multipart upto three levels. the message looks like this.

<html> html messages... </html> ------=_NextPart_000_4a97_1507_9e6 Content-Type: message/rfc822 X-Apparently-To: test X-Track: 1: 40 Received: from test Received: (from test) Received: test Message-ID: messge-id From: test To: test@domain

Cc: test@domain Subject: test Date: test MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="----=_NextPart_000_00CB_01C11C16.7F585C40" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.00.2314.1300 X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2314.1300 Content-Length: 849839 This is a multi-part message in MIME format. ------=_NextPart_000_00CB_01C11C16.7F585C40 ........................

The message having contentType as message/rcf is not taken as Multipart, but as part.All other email service interprets it properly. Javamail seems to fail in this regard. Can i handle this situation in javamail.

Re: Misinterpretation of Nested Multipart messages Author: Shu Chen (http://www.jguru.com/guru/viewbio.jsp?EID=520602), Oct 15, 2001Have you read the demo program msgshow.java in javamail/demo directory? I think it can solve your problem.

The above main answer does answer only a part of the problem. There is more to it. Author: Prasad Nutalapati (http://www.jguru.com/guru/viewbio.jsp?EID=551763), Jan 15, 2002

The problem expressed by Dieter Wimberger could also happen like this. In your email body, you can drag and drop another email message previously sent to you. This embedded email message might contain some two attached files. Then the structure of the overall message would look like this.

<Multipart>

<text-plain>main body text </text-plain>

<message-rfc822>

body of the embedded mail as INLINE content.

<text-plain> file1 mentioned as ATTACHMENT </text-plain>

<text-plain> file2 mentioned as ATTACHMENT </text-plain>

</message-rfc822>

</Multipart>

Now when using either suggested flat-out method or architecturally "correct" method of hierarchial method, you will fail to store those attached files file1, and file2. What actually happens is since embedded email is reported as INLINE content, whole content of the embedded email along with its attached files, will be treated as part of the main email body. To store the attached files from the embedded email, what can be done ? Thanks in advance.

Prasad.

multipart messages problem (text/plain text/html inline text/html) Author: Boris Milasinovic (http://www.jguru.com/guru/viewbio.jsp?EID=483088), Apr 3, 2002This solution shows how to parse multipart messages but imagine this problem:Parsing mail which consists of these parts:text/plaintext/htmltext/htmltext/htmlThe last 2 html files are inline, and the first and second part are basicaly same (OExpress send it in text/html format). My question is: Is there any way to determine that first 2 parts are in fact same thing, so I won't display both of them?

Why can't I append a message to the POP3 folder?Location: http://www.jguru.com/faq/view.jsp?EID=479343 Created: Aug 19, 2001 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

The appendMessages(Message[]) method of Sun's POP3 provider (com.sun.mail.pop3.POP3Folder) always throws MethodNotSupportedException because the POP3 protocol doesn't support appending messages.

How do I get the UID for a specific POP3 message?Location: http://www.jguru.com/faq/view.jsp?EID=479346 Created: Aug 19, 2001 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

This is dependent on the provider you are using. With Sun's POP3 provider, you can cast the Folder to a com.sun.mail.pop3.POP3Folder and ask for the UID with getUID(Message). This will return the UID as a String, or null if not available.Comments and alternative answers

Sample code Author: Stephen Olaño (http://www.jguru.com/guru/viewbio.jsp?EID=28825), Nov 5, 2001Folder folder;folder = store.getFolder("INBOX");folder.open(Folder.READ_WRITE);

...

/** gets the uid of message */public static String getUID(Message msg) throws MessagingException { String uid = null; try { FetchProfile fp = new FetchProfile(); fp.add(UIDFolder.FetchProfileItem.UID); folder.fetch(message, fp); uid = ((com.sun.mail.pop3.POP3Folder)folder).getUID(msg); } catch (MessagingException me) {

throw me; } return uid;}

How do I get the UID for a specific IMAP message?Location: http://www.jguru.com/faq/view.jsp?EID=479349 Created: Aug 19, 2001 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

This is dependent on the provider you are using. With Sun's IMAP provider you can cast the Folder to a com.sun.mail.imap.IMAPFolder and call the getUID(Message) method. This will return the identifier as a long.







Where can I find information on the QUOTA extension of IMAP4?Location: http://www.jguru.com/faq/view.jsp?EID=479350 Created: Aug 19, 2001 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

The QUOTA extension is defined by RFC 2087.

Where can I find out more information on IMAP rights and access control lists?Location: http://www.jguru.com/faq/view.jsp?EID=479354 Created: Aug 19, 2001 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

RFC 2086 defines the IMAP4 ACL extension.

How do I find out the IMAP rights I have on a folder?Location: http://www.jguru.com/faq/view.jsp?EID=479358 Created: Aug 19, 2001 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

This is specific to the IMAP provider. For Sun's IMAP provider this is done by casting the Folder to a com.sun.mail.imap.IMAPFolder object. To find the rights for the currently authenticated user, use myRights(), to find the rights for another object/user, use listRights().

Where can I find a list of free open relay SMTP mail servers?Location: http://www.jguru.com/faq/view.jsp?EID=488770 Created: Sep 2, 2001 Modified: 2001-09-02 18:37:26.884Author: huiming Gu (http://www.jguru.com/guru/viewbio.jsp?EID=485896) Question originally posed by huiming Gu (http://www.jguru.com/guru/viewbio.jsp?EID=485896

http://www.sendfakemail.com/fakemail/openrelaylist.asp provides one such list.

How do I attach a database BLOB into a mail message, and send by invoking Java classes from SQL procedures (in Oracle)?Location: http://www.jguru.com/faq/view.jsp?EID=498439 Created: Sep 17, 2001 Modified: 2001-09-30 17:14:07.731Author: Denis Navarre (http://www.jguru.com/guru/viewbio.jsp?EID=495283) Question originally posed by Yogesh Kumar (http://www.jguru.com/guru/viewbio.jsp?EID=491071

Here is a solution (for Oracle):

1. Create a class BufferedDataSource to transform a byte array into a DataSource used to attach the "stream" to the message. 2. Convert the BLOB (here is a BLOB from Oracle) into a byte array to be used in the DataSource 3. Attach the stream through the DataSource

Create a BufferedDataSource to be used to attach the file:




http://www.sendfakemail.com/fakemail/openrelaylist.asp












package lu.ic.visitcard.mail;

import java.io.*; import java.util.*; import javax.activation.*;

/** * DataSource from an array of bytes * Creation date: (07/06/01 21:22:30) */ public class BufferedDataSource implements DataSource {

private byte[] _data; private java.lang.String _name;

/** * Creates a DataSource from an array of bytes * @param data byte[] Array of bytes to convert into a DataSource * @param name String Name of the DataSource (ex: filename) */ public BufferedDataSource(byte[] data, String name) { _data = data; _name = name;

}

/** * Returns the content-type information required by a DataSource * application/octet-stream in this case */ public String getContentType() { return "application/octet-stream";

}

/** * Returns an InputStream from the DataSource * @returns InputStream Array of bytes converted into an InputStream */ public InputStream getInputStream() throws IOException { return new ByteArrayInputStream(_data);

}

/** * Returns the name of the DataSource * @returns String Name of the DataSource */ public String getName() { return _name;

}

/** * Returns an OutputStream from the DataSource * @returns OutputStream Array of bytes converted into an OutputStream */ public OutputStream getOutputStream() throws IOException { OutputStream out = new ByteArrayOutputStream(); out.write(_data); return out;

}

}

How to get a byte array from a BLOB:

byte[] bytearray; BLOB blob = ((OracleResultSet) rs).getBLOB("IMAGE_GIF"); if (blob != null) {

BufferedInputStream bis = new BufferedInputStream(blob.getBinaryStream()); ByteArrayOutputStream bao = new ByteArrayOutputStream(); byte[] buffer = new byte[4096]; int length = 0; while ((length = bis.read(buffer)) != -1) { bao.write(buffer, 0, length);

} bao.close(); bis.close(); bytearray = bao.toByteArray();

}

How to attach the file:

// Create attachment zone MimeBodyPart att = new MimeBodyPart(); // Attach the file or buffer BufferedDataSource bds = new BufferedDataSource(bytearray, "AttName"); att.setDataHandler(new DataHandler(bds)); att.setFileName(bds.getName());

Where can I find the JavaMail specification?Location: http://www.jguru.com/faq/view.jsp?EID=507251 Created: Sep 30, 2001 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by John Zukowski PREMIUM (http://www.jguru.com/guru/viewbio.jsp?EID=7




The specification is available as a PDF file from http://java.sun.com/products/javamail/JavaMail-1.2.pdf.

How can I add S/MIME support to JavaMail?Location: http://www.jguru.com/faq/view.jsp?EID=507254 Created: Sep 30, 2001 Modified: 2001-09-30 17:26:48.158Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by John Zukowski PREMIUM (http://www.jguru.com/guru/viewbio.jsp?EID=7

You basically need to get an S/MIME provider:

• ISNetworks

Please add additional providers as feedback.Comments and alternative answers

More S/MiME providers Author: Eugene Kuleshov (http://www.jguru.com/guru/viewbio.jsp?EID=442441), Oct 3, 2001http://www.wedgetail.com/jcsi/index.html

http://www.baltimore.com/keytools/smime/

http://jcewww.iaik.tu-graz.ac.at/products/smime/index.php

https://www.entrust.com/developer/workshop/ettkjava_relnotes.htm

Are there any ColdFusion extensions that use JavaMail?Location: http://www.jguru.com/faq/view.jsp?EID=507256 Created: Sep 30, 2001 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by John Zukowski PREMIUM (http://www.jguru.com/guru/viewbio.jsp?EID=7

There is a replacement for CFPOP from Infranet that does this.

How can I get my POP mail from a J2ME device?Location: http://www.jguru.com/faq/view.jsp?EID=507258 Created: Sep 30, 2001 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by John Zukowski PREMIUM (http://www.jguru.com/guru/viewbio.jsp?EID=7

Check out the J2ME Pop3 Email package from Nextel.

How do I specify a port other then the default to get my POP mail?Location: http://www.jguru.com/faq/view.jsp?EID=507284 Created: Sep 30, 2001


http://www.javacommerce.com/projects/popmail/




http://www.infranet.com/cf_iipop3.htm




http://www.isnetworks.com/smime/




http://java.sun.com/products/javamail/JavaMail-1.2.pdf

Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by John Zukowski PREMIUM (http://www.jguru.com/guru/viewbio.jsp?EID=7

You need to specify the port by setting the mail.pop3.port property: props.put("mail.pop3.port", "1234");

My SMTP server supports 8-bit MIME. How can I tell JavaMail to use it?Location: http://www.jguru.com/faq/view.jsp?EID=507286 Created: Sep 30, 2001 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by John Zukowski PREMIUM (http://www.jguru.com/guru/viewbio.jsp?EID=7

Set the mail.smtp.allow8bitmime property to true: props.put("mail.smtp.allow8bitmime", "true");

This works with Sun's SMTP provider. Other providers may differ. According to the docs:

If set to true, and the server supports the 8BITMIME extension, text parts of messages that use the "quoted-printable" or "base64" encodings are converted to use "8bit" encoding if they follow the RFC2045 rules for 8bit text.

Is it possible to send messages if some of the addresses are invalid? By default, if any addresses are invalid the message isn't sent.Location: http://www.jguru.com/faq/view.jsp?EID=507288 Created: Sep 30, 2001 Modified: 2002-01-01 08:04:39.616Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by John Zukowski PREMIUM (http://www.jguru.com/guru/viewbio.jsp?EID=7

You need to set the mail.smtp.sendpartial property to true: props.put("mail.smtp.sendpartial", "true");By default, this is false. The partial failure will trigger a SendFailedException.

This assumes the SMTP server is setup not to fail multiple recipient mail if any address is invalid.

Is it possible to disable the caching of STATUS command responses?Location: http://www.jguru.com/faq/view.jsp?EID=507294 Created: Sep 30, 2001 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by John Zukowski PREMIUM (http://www.jguru.com/guru/viewbio.jsp?EID=7

Setting the mail.imap.statuscachetimeout property to zero will disable the caching. By default, the cache setting is 1 second (1000). props.put("mail.imap.statuscachetimeout", "0");












Does the JavaMail search library simply just iterate thru a Folder.getMessages() call and perform comparisons?Location: http://www.jguru.com/faq/view.jsp?EID=514416 Created: Oct 8, 2001 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

For IMAP, the search turns into a command that's sent to the server, where the real search happens, using whatever optimizations the IMAP server might implement.

For POP3, the search happens locally, as described.

How can I set the Message-ID header for a message via JavaMail?Location: http://www.jguru.com/faq/view.jsp?EID=516514 Created: Oct 10, 2001 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by Mary Jane (http://www.jguru.com/guru/viewbio.jsp?EID=516494

You'll need to subclass MimeMessage and override the updateHeaders() method. In the subclass, call super.updateHeaders(), then set the Message-ID header for your custom header value.Comments and alternative answers

How can I set the Message-ID header for a message via JavaMail? Example: Author: Sal Ingrilli (http://www.jguru.com/guru/viewbio.jsp?EID=855210), Apr 25, 2002MimeMessage m = new MimeMessage (session) {

protected void updateHeaders () throws MessagingException {

// let the base set the headers super.updateHeaders ();

// the header name final String messageIdName = "Message-ID";

// log javaMail generated header String javaMailHeader = super.getHeader (messageIdName) [0]; logger.info ("JavaMail generated message id: \"" + javaMailHeader + "\""); logger.info ("JavaMail generated message id changed to: \"" + messageId + "\"");

// change the header to be our id super.setHeader (messageIdName, messageId); }};

How do I get a list of available providers?Location: http://www.jguru.com/faq/view.jsp?EID=518835







Created: Oct 12, 2001 Author: Jens Dibbern (http://www.jguru.com/guru/viewbio.jsp?EID=9896) Question originally posed by John Zukowski PREMIUM (http://www.jguru.com/guru/viewbio.jsp?EID=7

The javax.mail.Session class has a method getProviders() which returns an array of javax.mail.Provider objects.

How can you specify a group list as a recipient of a message? Location: http://www.jguru.com/faq/view.jsp?EID=519018 Created: Oct 12, 2001 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by Stephen Smith (http://www.jguru.com/guru/viewbio.jsp?EID=289196

Short answer, with Sun's SMTP provider you can't.

Longer answer: SMTP requires the individual names within the group list to be specified in separate RCPT commands. Sun's SMTP provider sends them as a single command and the server rejects them. You can create an InternetAddress for the group list, the sending though will fail.

Background:Group lists are a specific type of valid email address in the RFC822 spec under section A.1.5. The 'To:' header of an email sent to a group list would look like:

To: Announcements: [email protected], [email protected];

To: Comment: address, address;

They allow you to provide a comment on the list of people who are receiving the email. The comment above is "Announcements". The interesting thing is that the addresses portion may be blank leaving you with just the comment portion:

To: Undisclosed-Recipients:;

Using a group list with a blank address section is a standard list server technique.

How can I redirect the output of session.setDebug(true) so that I can capture it in the program that uses it?Location: http://www.jguru.com/faq/view.jsp?EID=523526 Created: Oct 17, 2001 Modified: 2001-10-18 08:11:03.415Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by Andrew Cao (http://www.jguru.com/guru/viewbio.jsp?EID=523514

The messages are hardcoded to go to System.out. The best you can do is redirect System.out to a ByteArrayOutputStream: session.setDebug(true);ByteArrayOutputStream os = new ByteArrayOutputStream();PrintStream ps = new PrintStream(os);









// save outputPrintStream old = System.out;// change outputSystem.setOut(ps);// send...// reset outputSystem.setOut(old);System.out.println(os);

Why do I keep getting the following exception when using POP with JavaMail?

Exception in thread "main" java.lang.NoSuchFieldError: contentStream Location: http://www.jguru.com/faq/view.jsp?EID=523542 Created: Oct 17, 2001 Modified: 2001-10-18 08:12:08.356Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by Srinivas Velivela (http://www.jguru.com/guru/viewbio.jsp?EID=385777

This happens when you mix the JavaMail 1.1 and JavaMail 1.2 runtime classes. If I remember correctly, you are using the 1.1 POP classes with the 1.2 core classes. Check your CLASSPATH and remove the 1.1 classes (or the 1.2 ones). Remember that 1.2 comes with a POP3 provider in the main mail.jar file so you don't need to add another.

Is there anything special that must be done to send messages with JavaMail via the MS Exchange Server? Location: http://www.jguru.com/faq/view.jsp?EID=525071 Created: Oct 19, 2001 Author: Scott Warren (http://www.jguru.com/guru/viewbio.jsp?EID=261280) Question originally posed by Igor Artimenko (http://www.jguru.com/guru/viewbio.jsp?EID=520776

Check in the Managament Console that you have the Internet Mail Connector installed and running the IMC will listen on Port 25 and allow you to use the SMTP protocol.

The API for Exchange is MAPI. SMTP should work fine if you have the IMC installed.

If I construct a user flag by passing a String to the Flags constructor, and then call message.setFlags(userFlag, true), message.getFlags().contains(userFlagString) is returning false. What's up?Location: http://www.jguru.com/faq/view.jsp?EID=526446 Created: Oct 21, 2001 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

According to Bill Shannon, the primary JavaMail engineer at Sun, this is apprarently a bug. Instead of passing the string to the constructor, he suggests the following as a workaround: Flags flags = new Flags();flags.add(userFlagString);









message.setFlags(flags, true);Comments and alternative answers

What are user flags ? Author: Christopher Lupton (http://www.jguru.com/guru/viewbio.jsp?EID=877975), Sep 18, 2003What are these Flags used for ? Where can I learn more about them and why they would be useful in relation to JavaMail.

How can I get the full name of the recipient of a message?Location: http://www.jguru.com/faq/view.jsp?EID=532223 Created: Oct 28, 2001 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by Imran Mustafa (http://www.jguru.com/guru/viewbio.jsp?EID=512725

You can check to see if the Address returned by methods like getFrom() or getRecipients() is of type InternetAddress. Assuming it is, you can then call getPersonal().

Does JavaMail support creation of mail with nested MimeMultiParts? Location: http://www.jguru.com/faq/view.jsp?EID=532257 Created: Oct 28, 2001 Modified: 2001-11-12 17:05:46.483Author: Matt Newberry (http://www.jguru.com/guru/viewbio.jsp?EID=528009) Question originally posed by Matt Newberry (http://www.jguru.com/guru/viewbio.jsp?EID=528009

Background: To add a file attachment to multipart/alternative email (plain part + html part), I need to create the "alternative" MimeMultiPart, adding the plain and html Parts to it; then create a "mixed" MimeMultiPart, adding both the alternative multipart and the file attachment Parts to it. The MultiPart.addBodyPart() method does not support adding another MultiPart. The solution is the create both an "alternative" MimeMultipart and a "mixed" MimeMultipart. Add the "plain" and "html" MimeBodyParts to the alternative MimeMultipart. Then create an empty MimeBodyPart and call it's setContent() method, passing in the alternative MimeMultipart. Now add that MimeBodyPart to the mixed MimeMultipart and, finally, add any attachments as additional mixed MimeBodyParts.

Whew! Describing it is more labor than doing it. Maybe this code snippet will make it clearer:

Message msg;MimeBodyPart plainPart = new MimeBodyPart();MimeBodyPart htmlPart = new MimeBodyPart();Vector attachments = new Vector();

private void buildMessage() throws MessagingException { Multipart alt = new MimeMultipart("alternative"); alt.addBodyPart(plainPart);







alt.addBodyPart(htmlPart); if (attachments.size() == 0) msg.setContent(alt); else { Multipart mixed = new MimeMultipart("mixed"); MimeBodyPart wrap = new MimeBodyPart(); wrap.setContent(alt); // HERE'S THE KEY mixed.addBodyPart(wrap); Enumeration att = attachments.elements(); while (att.hasMoreElements()) { mixed.addBodyPart((MimeBodyPart)att.nextElement()); } msg.setContent(mixed); }}

How the send the contents of a dynamically generated page by email? Location: http://www.jguru.com/faq/view.jsp?EID=534404 Created: Oct 30, 2001 Author: Nitesh Naveen (http://www.jguru.com/guru/viewbio.jsp?EID=515443) Question originally posed by sabu vs PREMIUM (http://www.jguru.com/guru/viewbio.jsp?EID=476248

The document.body.innerText property contains the page contents, just use that in a mailto link as the body.

Here is an example to show how you can get the contents of the html. This works in Internet Explorer only though. I couldn't find an alternative in Netscape. Also there is some probs with the alignment of the text in the mailer...(Microsoft Outlook)

<html><head><script>function mailDoc() {parent.location="mailto:[email protected]?body="+document.body.innerText;}</script></head><body>line 1<br>line 2<br>line 3<br>line 4<br>line 5<br>line 6<br><br><form><input type=button value="Mail Contents" onclick="mailDoc()"></form></body></html>

How can I send an email to a user supplied email address with an HTML form?




Location: http://www.jguru.com/faq/view.jsp?EID=534420 Created: Oct 30, 2001 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

<form action="" name="myform" method="post" enctype="text/plain"onSubmit="document.myform.action = 'mailto:' + document.myform.address.value">Address: <input type="text" name="address"> <P>Content: <textarea name="content"></textarea><P><input type="submit" value="Submit"></form>

If I have a complete message in an InputStream, how can I construct a Message from it?Location: http://www.jguru.com/faq/view.jsp?EID=544230 Created: Nov 10, 2001 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by Serkan Ketenci (http://www.jguru.com/guru/viewbio.jsp?EID=509873

Just create an InputStream with the messge and call the MimeMessage constructor that accepts the input stream. For instance, if your message was in the file message.txt: Subject: Testing To: Me <[email protected]> From: "You" <[email protected]>

The content.You can send with the following program, passing in your SMTP server and filename as args: import java.util.Properties;import javax.mail.*;import javax.mail.internet.*;import java.io.*;

public class MailExample { public static void main (String args[]) throws Exception { String host = args[0]; String filename = args[1];




// Get InputStream FileInputStream fis = new FileInputStream(filename);

// Create message MimeMessage message = new MimeMessage(session, fis);







How do I add a MultiPart to a MultiPart? The API only seems to allow adding BodyPart's.Location: http://www.jguru.com/faq/view.jsp?EID=545920 Created: Nov 12, 2001 Author: Walid "BigW" Gedeon (http://www.jguru.com/guru/viewbio.jsp?EID=543181) Question originally posed by didier chaumond (http://www.jguru.com/guru/viewbio.jsp?EID=12895

BodyPart implements the Part interface where you can set it's contents to be a Multipart: setContent(Multipart).

How do I attach multiple files to a message?Location: http://www.jguru.com/faq/view.jsp?EID=548245 Created: Nov 15, 2001 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by kdhawan dhawan (http://www.jguru.com/guru/viewbio.jsp?EID=509463

You just need to combine them all into one MimeMultipart and add each one as its own MimeBodyPart. The following does just this, taking a directory name as the argument, sending everything within the directory as attachments in one message. Use with care as the program doesn't limit the message size. import java.util.Properties;import javax.mail.*;import javax.mail.internet.*;import javax.activation.*;import java.io.*;

public class AttachExample { public static void main (String args[]) throws Exception { String host = args[0]; String from = args[1]; String to = args[2]; String directory = args[3];

Properties props = System.getProperties();

props.put("mail.smtp.host", host);

Session session = Session.getInstance(props, null);

Message message = new MimeMessage(session); message.setFrom(new InternetAddress(from)); message.addRecipient(Message.RecipientType.TO, new InternetAddress(to)); message.setSubject("Directory Attachments");

BodyPart messageBodyPart = new MimeBodyPart();







messageBodyPart.setText("Directory: " + directory);

Multipart multipart = new MimeMultipart(); multipart.addBodyPart(messageBodyPart);

File dir = new File(directory); String list[] = dir.list();

for (int i=0, n=list.length; i<n; i++) { File f = new File(list[i]); if (f.isFile()) { System.out.println("Adding: " + list[i]); messageBodyPart = new MimeBodyPart(); DataSource source = new FileDataSource(list[i]); messageBodyPart.setDataHandler(new DataHandler(source)); messageBodyPart.setFileName(list[i]); multipart.addBodyPart(messageBodyPart); } } message.setContent(multipart);

Transport.send(message); }}Comments and alternative answers

H2 make it work Author: Eric Bilange (http://www.jguru.com/guru/viewbio.jsp?EID=995147), Sep 5, 2002Found this snippet useful and clear example. However it does not work. You should read toward the end in the loop appending files:

for (int i=0, n=list.length; i<n; i++) { File f = new File(directory + list[i]); if (f.isFile()) { System.out.println("Adding: " + list[i]); messageBodyPart = new MimeBodyPart(); DataSource source = new FileDataSource(directory + list[i]); messageBodyPart.setDataHandler(new DataHandler(source)); messageBodyPart.setFileName(list[i]); multipart.addBodyPart(messageBodyPart); } }

Since retrieved file names are just names without the path.

How do you create a new IMAPMessage? The IMAPMessage contructor is protected. [I am copying the attributes of a source Message to a new IMAPMessage object which will be appended to a different Store. After this process, I need to extract the UID of the IMAPMessage which is not available with the superclasses (Message and MimeMessage).]Location: http://www.jguru.com/faq/view.jsp?EID=565637


Created: Nov 28, 2001 Author: allen petersen (http://www.jguru.com/guru/viewbio.jsp?EID=105938) Question originally posed by Javi Tabemoor (http://www.jguru.com/guru/viewbio.jsp?EID=441109

Let the Store create it for you.

No, really. Create your new MimeMessage. Call Folder.appendMessages() on the target folder. Listen for the resulting MessageCountEvent telling you that the message has been added. Use MessageCountEvent.getMessages() to get the newly added message. This message will be a proper IMAPMessage, and you should be able to use UIDFolder.getUID() on it.

How can I send a binary output stream as an attachment, without saving the content to a file?Location: http://www.jguru.com/faq/view.jsp?EID=566428 Created: Nov 29, 2001 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by r devserver (http://www.jguru.com/guru/viewbio.jsp?EID=566058

You need to encode the content so that it is 7-bit safe. Use MimeUtility.encode(OutputStream stream, String encoding) to encode the content

What encodings/decodings are supported by the JavaMail API?Location: http://www.jguru.com/faq/view.jsp?EID=566429 Created: Nov 29, 2001 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

All the encodings defined in RFC 2045 are supported here. This includes "base64", "quoted-printable", "7bit", "8bit", and "binary". In addition, "uuencode" is supported, too.

What's the ALL constant of the MimeUtility used for? It has no comments in the docs.Location: http://www.jguru.com/faq/view.jsp?EID=566437 Created: Nov 29, 2001 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

This constant seems to just be used internally by the class, but is public. It is used by the package private checkAscii() method to indicates that all the bytes in this input stream must be checked.

How do I parse a comma-separated list of newsgroups into an array of Address objects?Location: http://www.jguru.com/faq/view.jsp?EID=566439 Created: Nov 29, 2001 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

The NewsAddress class in the javax.mail.internet package can do this for you: public static NewsAddress[] parse(String newsgroups)












throws AddressException

Does JavaMail support NAMESPACE extentions for IMAP?Location: http://www.jguru.com/faq/view.jsp?EID=566445 Created: Nov 29, 2001 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

As of JavaMail 1.2, this is supported, if the IMAP server supports it.

Who is behind the JavaMail API?Location: http://www.jguru.com/faq/view.jsp?EID=566449 Created: Nov 29, 2001 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

The primary responsible party for the JavaMail API is Bill Shannon of Sun. If you have a question that you suspect is a bug, send it to the mailing list and he'll be sure to address it.

Where can I find information about JavaMail support for quotas?Location: http://www.jguru.com/faq/view.jsp?EID=571367 Created: Dec 3, 2001 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

Quota support is specific to IMAP. The specific support depends on the provider. For the Sun IMAP provider, package com.sun.mail.imap, you'll find a Quota class and a getQuota() method for the IMAPStore.

Why am I getting a parsing exception when the content type is something like "Content-Type: text/html;"?Location: http://www.jguru.com/faq/view.jsp?EID=571368 Created: Dec 3, 2001 Modified: 2001-12-21 21:27:43.149Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

Having a trailing semicolon violates the MIME specification. The JavaMail libraries do not compensate for this violation. It is supposed to look like the following: content := "Content-Type" ":" type "/" subtype *(";" parameter) parameter := attribute "=" value

Does the JavaMail API provided disconnected support?Location: http://www.jguru.com/faq/view.jsp?EID=581208 Created: Dec 11, 2001 Author: allen petersen (http://www.jguru.com/guru/viewbio.jsp?EID=105938) Question originally posed by John Zukowski PREMIUM (http://www.jguru.com/guru/viewbio.jsp?EID=7

JavaMail provides disconnected support for both IMAP and POP3 in a similar fashion: access to the messages on the mail server is provided, as is the ability to identify different instances of a single message across separate connections to the mail store (using the message's UID). You can also get providers, such as the ones for mbox and mh, which let you store messages on local filesystems.













That's all that JavaMail itself gives you. When it comes to other operations, such as copying messages from the server to the local machine and synchronizing the server and local copies of the mailboxes, the work is left to the applications.

The same may be said for composing messages offline. You can use JavaMail to create the Message object that will be sent. If, however, you want to save said message to disk to be sent later, then your application will have to do so explicitly. If you want all of the queued messages to be sent automatically as soon as your network connection is back up, then you'll have to write the code that gets your messages from wherever they've been stored and calls send() on them, too.

Given this information, the question of whether or not the JavaMail API actually provides disconnected support is up to the interpretation of the individual. :)

Get part of a message .. How can I use the optional POP3 command TOP to get the beginning of a message?Location: http://www.jguru.com/faq/view.jsp?EID=581537 Created: Dec 12, 2001 Author: allen petersen (http://www.jguru.com/guru/viewbio.jsp?EID=105938) Question originally posed by Serkan Ketenci (http://www.jguru.com/guru/viewbio.jsp?EID=509873

You can't. At least, with the Sun POP3 provider, you can't.

In JavaMail 1.2, the Sun POP3 provider only uses the TOP command to get the headers of the Message. Any content that is also returned with that usage of the command is ignored. So there's no really good way for an application using JavaMail to get the beginning of a message from TOP.

As always with POP3 questions, it is possible that another, third-party POP3 provider might have that functionality.

How can you use BodyTerm to do a case sensitive search? The superclass' constructor that enables this isn't exposed.Location: http://www.jguru.com/faq/view.jsp?EID=582959 Created: Dec 12, 2001 Author: allen petersen (http://www.jguru.com/guru/viewbio.jsp?EID=105938) Question originally posed by Mahesh Kuruba (http://www.jguru.com/guru/viewbio.jsp?EID=293288

There are two issues here. The first is the question of getting a SearchTerm whose match() method will do a case sensitive search. Unfortunately, as you've noticed, StringTerm's ignoreCase attribute is protected, and none of the subclasses that are provided in the JavaMail package make it available. To make matters more difficult, all of StringTerm's non-abstract subclasses are final, so you can't just subclass them and set the ignoreCase flag to false.

So that pretty much means that we have to write our own subclass of StringTerm. A trivial example, which doesn't even handle messages with attachments, would be

import javax.mail.*;







import javax.mail.search.*;

public class CaseSensitiveBodyTerm extends StringTerm {

public CaseSensitiveBodyTerm(String pattern) { super(pattern, false); }

public boolean match(Message msg) { try { Object content = msg.getContent(); if (content instanceof String) { return super.match((String)content); } else { return false; } } catch (Exception e) { return false; } }

Now, there is a second problem that you may run into. If you're using IMAP, the IMAP provider will use the IMAP SEARCH functionality to do a Folder.search() call for you. This is much more efficient than downloading every message in your folder to your client and then doing the search on the local messages. Unfortunatley, since the IMAP SEARCH command is defined to be case insensitive, that latter method is exactly what the search call will fall back to if you use this custom case sensitive SearchTerm. For large folders, this search could take upwards on forever. In cases like that, you're probably better off making a special case that does the case insensitive search on the server, and then filters the responses by the case sensitive search.

Where can I get the JavaMail API docs?Location: http://www.jguru.com/faq/view.jsp?EID=705106 Created: Dec 29, 2001 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

These come with the download of the implementation of the JavaMail API or J2EE. You can view the 1.2 API javadocs online at http://java.sun.com/products/javamail/1.2/docs/javadocs/. The older 1.1 version are not available online.

Where can I find the API docs for the JavaBeans Activation Framework?Location: http://www.jguru.com/faq/view.jsp?EID=705108 Created: Dec 29, 2001 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

These come with the implementation download and with J2EE. They do not come with the JavaMail implementation. You can view them online at http://java.sun.com/products/javabeans/glasgow/javadocs/.

http://java.sun.com/products/javabeans/glasgow/javadocs/



http://java.sun.com/products/javamail/1.2/docs/javadocs/



Where can I find out about LDAP support with JAMES?Location: http://www.jguru.com/faq/view.jsp?EID=705109 Created: Dec 29, 2001 Modified: 2003-02-25 21:58:30.898Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

http://james.apache.org/usingLDAP_v1_2.html provides a guide to the experimental LDAP support available.

Where can I find a JSP tag library for sending mail from JSP pages via the JavaMail API?Location: http://www.jguru.com/faq/view.jsp?EID=705110 Created: Dec 29, 2001 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

Sourceforge provides a library at http://sourceforge.net/projects/jsptags/. There is also an article at Sun that discusses this: http://java.sun.com/jdc/technicalArticles/javaserverpages/emailapps/.

Where can I find an MH provider?Location: http://www.jguru.com/faq/view.jsp?EID=705111 Created: Dec 29, 2001 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

You can store your mail messages locally with the local store provider available at http://trustice.com/java/icemh/.

I'm sure there are others out there. Please add feedback if you are aware of them.

What's the parameter to the message.reply(boolean) method for?Location: http://www.jguru.com/faq/view.jsp?EID=708369 Created: Jan 3, 2002 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by Minh Tri Tran (http://www.jguru.com/guru/viewbio.jsp?EID=706455

Passing in a value of true is like reply to all. Assuming the message was addressed to you, you would get a copy back. In addition, everyone else on the TO, CC and FROM list would get a copy. Otherwise, only who the message was from would get the reply.

If I want to manually create a reply message, how do I find out where to direct the message?Location: http://www.jguru.com/faq/view.jsp?EID=708371 Created: Jan 3, 2002 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

While you could call getFrom() directly, the better thing to do is call the getReplyTo() method of Message.

How do I clone a JavaMail message (MimeMessage)?Location: http://www.jguru.com/faq/view.jsp?EID=711834







http://trustice.com/java/icemh/



http://java.sun.com/jdc/technicalArticles/javaserverpages/emailapps/

http://sourceforge.net/projects/jsptags/



http://james.apache.org/usingLDAP_v1_2.html



Created: Jan 7, 2002 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by Joey Bernsen (http://www.jguru.com/guru/viewbio.jsp?EID=587278

MimeMessage newOne = new MimeMessage(oldOne);

Is there a limitation to the email headers that are settable from JavaMail? For instance, can you set the 'Received' header, indicating which server you're sending from?Location: http://www.jguru.com/faq/view.jsp?EID=721460 Created: Jan 15, 2002 Author: Jeff Gay (http://www.jguru.com/guru/viewbio.jsp?EID=468673) Question originally posed by J Craig (http://www.jguru.com/guru/viewbio.jsp?EID=339297

There's no limitation as to the headers you can set using the JavaMail API. You can set any headers desired. Of course, once the message is sent, mail servers will add and change headers themselves, and ignore headers previously set. You can get more information on which "agents" set headers by reading the MIME standards.

How do I find out the mail message size before sending? MimeMessage.getSize() keeps reporting -1.Location: http://www.jguru.com/faq/view.jsp?EID=726102 Created: Jan 18, 2002 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

The simplest way is to write the message to a ByteArrayOutputStream and check its size: ByteArrayOutputStream bais = new ByteArrayOutputStream(); message.writeTo(bais); System.out.println(bais.size());

How do I change the content of a mime message bodypart and send out the updated message without having to copy it into a new message object? .saveChanges() doesn't help here...Location: http://www.jguru.com/faq/view.jsp?EID=727496 Created: Jan 20, 2002 Author: Jeff Gay (http://www.jguru.com/guru/viewbio.jsp?EID=468673) Question originally posed by matthias hofschen (http://www.jguru.com/guru/viewbio.jsp?EID=305010

You can't. You have to make a new message because the saveChanges() method only affects the message within it's scope, i.e. the original provider's session.

Where can I find a list of known bugs for JavaMail?Location: http://www.jguru.com/faq/view.jsp?EID=732255 Created: Jan 23, 2002 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by sharona feinberg (http://www.jguru.com/guru/viewbio.jsp?EID=581672

Same as the rest of Java.














Go to http://java.sun.com/jdc/bugParade/. Search for JavaMail.

When sending mail through MS Exchange 200, I keep getting 421 Too many errors on this connection -- closing Any idea??? Location: http://www.jguru.com/faq/view.jsp?EID=740981 Created: Jan 30, 2002 Author: julien cool (http://www.jguru.com/guru/viewbio.jsp?EID=473366) Question originally posed by julien cool (http://www.jguru.com/guru/viewbio.jsp?EID=473366

Exchange has a limit on the number of mail messages that can be sent across a single SMTP connection. If you hit this limit, then you'll get this message.

In MS Exchange 2000 (and it seems in SMTP Server coming with IIS), there is a properties panel in the Default SMTP Server named "Messages" where you can tune :

• size of one message • number of mails by connection (default is 20) • total size of messages in one session • recipients by message

See http://www.microsoft.com/technet/treeview/default.asp?url=/TechNet/prodtechnol/exchange/deploy/depovg/exinfflo.asp for more information.

Where can I find out about the format of the Outlook Contacts database and the Exchange and Outlook Message and Public folders?Location: http://www.jguru.com/faq/view.jsp?EID=740997 Created: Jan 30, 2002 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

See the MSDN article at http://msdn.microsoft.com//library/en-us/dnout98/html/olexcoutlk.asp that describes how to access Microsoft Exchange and Outlook data using Visual Basic.

I'm getting a javax.mail.MessagingException: 501 unacceptable mail address thrown from my program, what can the problem be?Location: http://www.jguru.com/faq/view.jsp?EID=741012 Created: Jan 30, 2002 Author: Florin Rapan (http://www.jguru.com/guru/viewbio.jsp?EID=385219) Question originally posed by Florin Rapan (http://www.jguru.com/guru/viewbio.jsp?EID=385219

Some SMTP servers require that the FROM user be registered with the domain.

If "anonymous" does not work, than try a registered user.

How can I create an HTML message which will contain multiple images?Location: http://www.jguru.com/faq/view.jsp?EID=741046 Created: Jan 30, 2002 Modified: 2002-09-16 04:53:57.576Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question






http://msdn.microsoft.com/library/en-us/dnout98/html/olexcoutlk.asp

http://msdn.microsoft.com/library/en-us/dnout98/html/olexcoutlk.asp



http://www.microsoft.com/technet/treeview/default.asp?url=/TechNet/prodtechnol/exchange/deploy/depovg/exinfflo.asp

http://www.microsoft.com/technet/treeview/default.asp?url=/TechNet/prodtechnol/exchange/deploy/depovg/exinfflo.asp




http://java.sun.com/jdc/bugParade/

originally posed by anthony nolan (http://www.jguru.com/guru/viewbio.jsp?EID=242190

Extending the single image FAQ to multiple images works fine. The extra images should not be treated as attachments, vs. inline images: import java.util.Properties;import javax.mail.*;import javax.mail.internet.*;import javax.activation.*;

public class HtmlImageExample { public static void main (String args[]) throws Exception { String host = args[0]; String from = args[1]; String to = args[2]; String file = args[3]; String file2 = args[4];




// Create the message Message message = new MimeMessage(session);

// Fill its headers message.setSubject("Embedded Image"); message.setFrom(new InternetAddress(from)); message.addRecipient(Message.RecipientType.TO, new InternetAddress(to));

// Create your new message part BodyPart messageBodyPart = new MimeBodyPart(); String htmlText = "<H1>Hello</H1>" + "<img src=\"cid:memememe\"><p>" + "<img src=\"cid:youyouyou\">"; messageBodyPart.setContent(htmlText, "text/html");

// Create a related multi-part to combine the parts MimeMultipart multipart = new MimeMultipart("related"); multipart.addBodyPart(messageBodyPart);

// Create part for the image messageBodyPart = new MimeBodyPart();

// Fetch the image and associate to part DataSource fds = new FileDataSource(file); messageBodyPart.setDataHandler(new DataHandler(fds)); messageBodyPart.setHeader("Content-ID","<memememe>");

// Add part to multi-part


multipart.addBodyPart(messageBodyPart);

// Create 2nd part for the image messageBodyPart = new MimeBodyPart();

// Fetch the image and associate to part DataSource fds2 = new FileDataSource(file2); messageBodyPart.setDataHandler(new DataHandler(fds2)); messageBodyPart.setHeader("Content-ID","<youyouyou>");

// Add part to multi-part multipart.addBodyPart(messageBodyPart);


// Send message Transport.send(message); }}Comments and alternative answers

Suggestion Author: Virgil Mocanu (http://www.jguru.com/guru/viewbio.jsp?EID=861598), Apr 30, 2002I would suggest to set the multipart as "alternative" (i.e. MimeMultipart multipart = new MimeMultipart("alternative");) because this option will let you to add a plain/text version of the message. Using "related" and adding a plain/text message will make the mail client to display the plain/text version of message instead of the HTML.

What is the disposition of a message?Location: http://www.jguru.com/faq/view.jsp?EID=750764 Created: Feb 7, 2002 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

Content disposition is an optional header (Content-Disposition) that can be used for an entire message or each part of the message. It can be used to indicate a part is an attachment, but it is not the only way to indicate a part is an attachment. For additional information on disposition, you can read RFC 2183.

After marking a message as deleted, is it possible to undo the deletion?Location: http://www.jguru.com/faq/view.jsp?EID=760799 Created: Feb 15, 2002 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by Jeya Selliah (http://www.jguru.com/guru/viewbio.jsp?EID=743366

Messages aren't deleted until you expunge the folder. If you don't want to the messages deleted, call close() with a value of false, and/or don't call expunge().




http://www.nacs.uci.edu/indiv/ehood/MIME/rfc2183.txt



Once you've closed the folder with close(true) or called expunge(), the message is gone.

How reliably can JavaMail parse messages?Location: http://www.jguru.com/faq/view.jsp?EID=761125 Created: Feb 16, 2002 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

Bob Dickinson of Brute Squad Labs wrote up an article that describes the reliableness of the API, along with a handful of problems he identified.

What is folding?Location: http://www.jguru.com/faq/view.jsp?EID=764371 Created: Feb 19, 2002 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

According to RFC 822, folding is the process of splitting a header field into multiple lines.

How do I fold a ParameterList?Location: http://www.jguru.com/faq/view.jsp?EID=764373 Created: Feb 19, 2002 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

The default (no-arg) toString() method returns the list unfolded. If you need the list folded, you can pass an int into the toString() method to indicate folding should be done and how many character positions should be counted for where to start folding.

How do I know about the SMTP and POP3 addresses of the mail service providers? Location: http://www.jguru.com/faq/view.jsp?EID=772830 Created: Feb 26, 2002 Modified: 2002-12-26 20:42:15.484Author: Chandra Patni (http://www.jguru.com/guru/viewbio.jsp?EID=33585) Question originally posed by Ananthalakshmi Subramaniyam (http://www.jguru.com/guru/viewbio.jsp?EID=768989

Not every service may provide POP3/IMAP/SMTP support. Even if so, they may choose to guard it for various reason. You need to contact a particular service provider for the details.

How to get access to the mailbox where user id contains space in it? I got few mail users created with space char in it (MS Exchange and Lotus Notes both). While same code works for the mail users without space char in their name but it throws AuthenticationFailedException for the mail users with space char in their nameLocation: http://www.jguru.com/faq/view.jsp?EID=772832 Created: Feb 26, 2002 Author: Chandra Patni (http://www.jguru.com/guru/viewbio.jsp?EID=33585) Question originally posed by AK Sharma (http://www.jguru.com/guru/viewbio.jsp?EID=759200











http://www.brutesquadlabs.com/technotes.jsp?id=5



For JavaMail 1.2, you don't have do anything for imap authentication if username contains white spaces. You should add double quotes around user name for InternetAddress and for client which doesn't do this automcatically. For example, an imap session using telnet on port 143 would be as follows. Client>a001 LOGIN "Chandra Patni" javaiscoolServer>a001 OK LOGIN completed.Client>a002 SELECT INBOXServer>* 4 EXISTS* 0 RECENT* FLAGS (\Seen \Answered \Flagged \Deleted \Draft)* OK [PERMANENTFLAGS (\Seen \Answered \Flagged \Deleted \Draft)]* OK [UNSEEN 2] Is the first unseen message* OK [UIDVALIDITY 1803] UIDVALIDITY value.a002 OK [READ-WRITE] SELECT completed.Client>a003 LOGOUTHowever, the SMTP server seem to have problem with such addresses. I could not make sendmail/reply work. The following example connects to an Exchange server and creates a Message which is appended to INBOX. import java.io.*;import java.util.Properties;import javax.mail.*;import javax.mail.internet.*;

public class TestMail1 { public static void main (String args[]) throws Exception { String username = "Java Duke"; String password = "welcomeduke"; String host = "myimap.domain.com"; if(args.length == 3) { username = args[0]; password = args[1]; host = args[2]; } Session session = Session.getInstance(new Properties(), null); MimeMessage message = new MimeMessage(session); InternetAddress from = new InternetAddress("\"Java Duke\"@"+ host); InternetAddress to = new InternetAddress("\"Java Duke\"@"+ host); message.setFrom(from); message.addRecipient(Message.RecipientType.TO, to); message.setSubject("This message is just added"); message.setText("Welcome Duke");

Store store = session.getStore("imap"); store.connect(host, username, password);

Folder folder = store.getFolder("INBOX"); folder.open(Folder.READ_WRITE); folder.appendMessages(new Message[] {message});

Message messages[] = folder.getMessages(); for (int i=0, n=messages.length; i<n; i++) { System.out.println(i + ": " + messages[i].getFrom()[0] + "\t" + messages[i].getSubject()); } }}The output and command is as follows >java TestMail1 "Chandra Patni" welcome1 localhost0: Chandra Patni <"Chandra Patni"@localhost> test1: <"Java Duke"@localhost> This message is just added2: <"Java Duke"@localhost> This message is just added3: <"Java Duke"@localhost> This message is just added

Is there a common solution for checking if a user has email on an Exchange server from Java code? Location: http://www.jguru.com/faq/view.jsp?EID=773197 Created: Feb 26, 2002 Author: Eugene Kuleshov (http://www.jguru.com/guru/viewbio.jsp?EID=442441) Question originally posed by Jason Rosenblum (http://www.jguru.com/guru/viewbio.jsp?EID=740621

The only pure Java solution for your situation is to enable IMAP gateway at your MS Exchange server and use the IMAP provider.

You can also develop your own JavaMail provider (i.e. using any Java-to-COM bridge and native MS MAPI availabe through COM).

Does anyone know of a JavaMail API implementation for Lotus Notes R5?Location: http://www.jguru.com/faq/view.jsp?EID=774727 Created: Feb 27, 2002 Author: Søren Mathiasen (http://www.jguru.com/guru/viewbio.jsp?EID=278838) Question originally posed by JOnathan Chapman (http://www.jguru.com/guru/viewbio.jsp?EID=767315

Since the mailbox in lotus notes is just a notes database, you could use the Notes Java API supplied by lotus.Check out: http://www.lotus.com/developers/devbase.nsf/homedata/homejava.

Also, Chandra Patni reports that Lotus supports imap protocol. So you can use the basic JavaMail API for Lotus.


Lotus Domino R5 Supports IMAP Author: Venkat Subramanian (http://www.jguru.com/guru/viewbio.jsp?EID=418608), Mar 13, 2002Lotus Domino R5 supports IMAP and seems to work decently with our JavaMail code. We do extensive Lotus Email processing with JavaMail, and the system seems to be holding on well. There are couple of implementation bugs in Lotus like - Copying email in the same Folder does not generate MessageCount event on it etc...

http://www.jguru.com/guru/viewbio.jsp?EID=33585

http://www.lotus.com/developers/devbase.nsf/homedata/homejava







See my posts in this board on it.

Re: Lotus Domino R5 Supports IMAP Author: JOnathan Chapman (http://www.jguru.com/guru/viewbio.jsp?EID=767315), Mar 26, 2002Thanks for your reply. We have enabled IMAP on our R5 server and we can connect and receive messages using JavaMail. However, if there are lines in the body of the message longer than 72 characters, then the line gets split at the first space before the 72nd character, and a newline inserted. This is causing the processing of data in the message to fail. Have you come across this problem, and if so what can be done about it?

Re[2]: Lotus Domino R5 Supports IMAP Author: Venkat Subramanian (http://www.jguru.com/guru/viewbio.jsp?EID=418608), Mar 27, 2002We don't deal too much with the body of the message. So I haven't seen that problem. Thanks for informing anyway! We also work with MS Exchange 5.5 and 2000 - Exchange seems to fold subjects which inserts white spaces if the subject is long. Lotus Domino R5 IMAP server seem to degrade in performance as the mail database size grows in size. This is because the IMAP implementation depends extensively on Lotus views. { For example an IMAP 'EXISTS' which in turn becomes a java mail event gets delayed up to a minute as database size grows, typically it comes back within a second).

Re[2]: Lotus Domino R5 Supports IMAP Author: Mario Fernandez (http://www.jguru.com/guru/viewbio.jsp?EID=848120), Apr 22, 2002Hi everybody, I still have a problem with Lotus Notes R5 and JavaMail access. I´ve got a lot of Notes User with Notes Mail System. So now the problem is that in order to make JavaMail access work, the protocol must be POP3 or IMAP, because there´s no Notes provider. Changing every user mail system to Notes would be neraly impossible, so any ideas please? Thanks in advance.

Re: Lotus Domino R5 Supports IMAP Author: ATUL MADNE (http://www.jguru.com/guru/viewbio.jsp?EID=1036993), Dec 12, 2002Hi I'm trying to connect IMAP on Lotus Daomino R5 with javamail. But its giving error in authentication. Can u send me some sample code. Thanks in advance Atul

Rmail with Lotus Author: Jaume Ba (http://www.jguru.com/guru/viewbio.jsp?EID=827369), Jul 9, 2002There are some pleople using Rmail with notes in order to send mails. See: http://www.java4less.com/mail_e.htm

Re:Problems while accessing Mails for IMAP Account from Lotus Domino

Server using JavaMail API. Author: Ananthalakshmi Subramaniyam (http://www.jguru.com/guru/viewbio.jsp?EID=768989), Dec 24, 2002Hi, Does JavaMail is robust to Lotus Notes Mail Database? Since, we have developed a EMail Client application which works perfectly with MS-Exchange Server and when we have tested with Lotus Domino Server, we've faced the following problems: 1. Cannot able to get Mail Priority(High/Low) Flag 2. Sometimes, cannot able to get Mails from the InBox.NoContentException is thrown. 3. and sometimes, not able to view attachments,etc. Can anyone tell me the solution on this! Settings: 1. IMAP Account 2. IMAP task is running in Lotus Domino Server Thanks, Ananthalakshmi.H

Re: Re:Problems while accessing Mails for IMAP Account from Lotus Domino Server using JavaMail API. Author: Thiadmer Sikkema (http://www.jguru.com/guru/viewbio.jsp?EID=1079811), Apr 28, 2003

NoContentException means probably that the content is Notes-RTF encoded instead of MIME.

The Classes for Notes require pretty much custom coding to get the same result, but are far more flexible.

How to get message id of the mail that is sent (not read)?Location: http://www.jguru.com/faq/view.jsp?EID=775190 Created: Feb 27, 2002 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by tolga evren (http://www.jguru.com/guru/viewbio.jsp?EID=530061

You'll need to subclass MimeMessage and get the id from the subclass after the header has been created. I believe you'll be able to get the generated header/id from updateHeaders().Comments and alternative answers

Or just use MimeMessage itself Author: Peter Hewitt (http://www.jguru.com/guru/viewbio.jsp?EID=578744), Apr 13, 2002I just used MimeMessage's getMessageID() to get the message id after sending the message and it worked for me. ...MimeMessage message = new MimeMessage(session);transport.sendMessage(message, message.getAllRecipients());transport.close();

System.out.println("message id = " + message.getMessageID());




How can I access my Hotmail account through the JavaMail API?Location: http://www.jguru.com/faq/view.jsp?EID=787604 Created: Mar 7, 2002 Modified: 2002-04-11 11:14:30.661Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

Hotmail doesn't use POP / IMAP. Instead, it uses a WebDAV based protocol (aka HTTPMail). There is a provider under development at SourceForge at http://sourceforge.net/projects/jhttpmail/.Comments and alternative answers

JDAVMail: a HotMail JavaMail service provider Author: Luc Claes (http://www.jguru.com/guru/viewbio.jsp?EID=103699), Apr 11, 2002JDAVMail is a JavaMail service provider allowing JavaMail-compliant clients to access HotMail mailboxes (read/delete/move/copy mail, create/rename/delete folders, ...). The package was published under the LGPL licence and is available at http://jdavmail.sourceforge.net.

Does the JavaMail API support embedded uuecoded blocks?Location: http://www.jguru.com/faq/view.jsp?EID=787899 Created: Mar 7, 2002 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

Not directly, though there is nothing to stop you from extending the library to support it.

What's new for JavaMail 1.3?Location: http://www.jguru.com/faq/view.jsp?EID=808326 Created: Mar 22, 2002 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

The proposed changes for JavaMail 1.3 are listed at http://java.sun.com/products/javamail/JavaMail-1.3-changes.txt.

Where can I find the sun.net.smtp.SmptClient class?Location: http://www.jguru.com/faq/view.jsp?EID=818683 Created: Mar 30, 2002 Modified: 2002-12-08 06:56:40.252Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

This class comes with the Sun runtime. As the package name of sun.net implies, it is non-standard and should not be used directly.

How can I remove headers in JavaMail?Location: http://www.jguru.com/faq/view.jsp?EID=921226 Created: Jun 20, 2002 Author: Dieter Wimberger (http://www.jguru.com/guru/viewbio.jsp?EID=25708) Question originally posed by rajesh m (http://www.jguru.com/guru/viewbio.jsp?EID=473123






http://java.sun.com/products/javamail/JavaMail-1.3-changes.txt





http://jdavmail.sourceforge.net/

http://sourceforge.net/projects/jhttpmail/



The MimeMessage has a method called removeHeader(String name)This will remove all headers with a given name. Note that the folder the message is in will have to be opened READ_WRITE at the point of modification. Probably you will want to make a copy and work on the copy MimeMessage(MimeMessage source)

How can I convert an Outlook mailbox/data file to Linux mbox format?Location: http://www.jguru.com/faq/view.jsp?EID=935049 Created: Jul 2, 2002 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

There is a project over at Sourceforge that does exactly this for you. Never tried it myself, but you can grab it from http://sourceforge.net/projects/ol2mbox.

How do I send a mail message at a certain time?Location: http://www.jguru.com/faq/view.jsp?EID=951553 Created: Jul 16, 2002 Modified: 2002-07-16 11:58:45.935Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by Rahul gidwani (http://www.jguru.com/guru/viewbio.jsp?EID=950302

The java.util.Timer class permits timed execution of events. It is completely unrelated to what you want to do, like send mail.Comments and alternative answers

send mail Author: Andrew Sun (http://www.jguru.com/guru/viewbio.jsp?EID=877680), Jul 19, 2002An easy way is to create your own runnable mail message object by extending java.mail.Message, add your own sendTime attribute. Then all you have to do is to start a timer, constantly checking for this sendTime value, Once System time pass this sendTime you can create a new thread and send this message off.

Sending timed email Author: Mark Nuttall (http://www.jguru.com/guru/viewbio.jsp?EID=462679), Jul 23, 2002Use a scheduler like Quartz.

Re: How do I send a mail message at a certain time? Author: Daniel Szwalkiewicz (http://www.jguru.com/guru/viewbio.jsp?EID=804798), Jan 23, 2003I have been using JCrontab for several months now for similar functionality and more. Everything from cleaning up log files, to uploading csv files to a database. I haven't had any issues with it and find it very reliable. If you think a unix-like cron system would help you out in your timed events, check out http://jcrontab.sourceforge.net




http://sourceforge.net/projects/ol2mbox



How to move message from one folder to another? Location: http://www.jguru.com/faq/view.jsp?EID=1010890 Created: Oct 10, 2002 Author: Asif Sajjad (http://www.jguru.com/guru/viewbio.jsp?EID=1010057) Question originally posed by chirag patel (http://www.jguru.com/guru/viewbio.jsp?EID=1006915

Here is the code I am using to move the messages to another folder. In findFolder method I search for the folder name and then open the folder to read-write. CurrentFolder is the folder from where the messages are copied to the destination folder. public void saveMessages(Message[] mArray, String folderName) throws Exception{ Folder f = findFolder(folderName); currentFolder.copyMessages(mArray, f);

// Now the delete the messages from Current Folder for ( int i = 0; i < mArray.length; i++){ mArray[i].setFlag(Flags.Flag.DELETED, true); } currentFolder.expunge(); }

[Keep in mind this is for IMAP only. POP doesn't support folders.]Comments and alternative answers

How do you get the new UID for the moved message? Author: Grace L (http://www.jguru.com/guru/viewbio.jsp?EID=1235917), May 9, 2005Once the message is moved from one folder to another, the UID or message ID is changed. How do you get the new UID for that message? Thanks, Grace

I want to use formating characters like tab (\t) in my mail messages but they are having no effect when the MIME type is text. How can I format my mail message?Location: http://www.jguru.com/faq/view.jsp?EID=1019675 Created: Oct 30, 2002 Author: Christopher Koenigsberg (http://www.jguru.com/guru/viewbio.jsp?EID=722897) Question originally posed by Jagadishwar Reddy Jannapureddy (http://www.jguru.com/guru/viewbio.jsp?EID=1019000

Tab characters in a text document can be interpreted differently by the program rendering the document, with different "tab stop" settings rendering them by different numbers of actual "blank space" characters (4 fixed spaces per tab, 8 fixed spaces, even possibly variable spacing, or even no spaces at all, as you are seeing, also depending on the fixed or variable font currently used in the rendering display program etc.).

So if you are committed to plain text (yay for you!) I would perhaps insert a specific number of spaces, not a tab character.







If I am sending a signed mail to an end user, whose mailserver doesn't support S/MIME, what would happen to the message?Location: http://www.jguru.com/faq/view.jsp?EID=1022010 Created: Nov 5, 2002 Author: Christopher Koenigsberg (http://www.jguru.com/guru/viewbio.jsp?EID=722897) Question originally posed by shital mhatre (http://www.jguru.com/guru/viewbio.jsp?EID=965620

Servers traditionally aren't supposed to look inside the content of a message (well nowadays they do often filter for viruses).

The S/MIME stuff only is in the headers and body of the message, not in the envelope. It's for use by the client MUA run by the recipient user, not by their server. So unless a filtering server thinks it's a virus or something, it should just get delivered to the recipient's mailbox, just like any other message.

Why do I get a NullPointer exception when I create an InternetAddress?Location: http://www.jguru.com/faq/view.jsp?EID=1023591 Created: Nov 9, 2002 Author: Michael Dean (http://www.jguru.com/guru/viewbio.jsp?EID=805382) Question originally posed by Luiz Augusto Dzis (http://www.jguru.com/guru/viewbio.jsp?EID=945999

The InternetAddress(String) constructor method will throw a NullPointerException if the String reference passed to it is null.

So, you might ask, why doesn't the documentation list that exception? Well, according to javadoc documentation standards, runtime exceptions (like NullPointerException) should never be listed in the "Throws" section of the javadoc. (Sun did this right. :) Instead, in a case like this--where the runtime exception could occur as a result of a bad parameter value---the documentation (method documentation or "Parameters" section) should specifically mention the possibility. (Sun forgot to do this.)

How can you tell that you'll get a NullPointerException instead of an AddressException? Run this program:

import javax.mail.MessagingException;import javax.mail.internet.InternetAddress;

public class Test { public static void main(String[] args) { try { String test = null; InternetAddress address = new InternetAddress(test); System.out.println(address); } catch (MessagingException e) { System.err.println(e); e.printStackTrace(); } }}

http://java.sun.com/j2ee/sdk_1.3/techdocs/api/javax/mail/internet/InternetAddress.html#InternetAddress(java.lang.String)







Why do I keep getting a NULL when looking at the TO/FROM header fields?Location: http://www.jguru.com/faq/view.jsp?EID=1029946 Created: Nov 25, 2002 Author: Christopher Koenigsberg (http://www.jguru.com/guru/viewbio.jsp?EID=722897) Question originally posed by bannu naidu (http://www.jguru.com/guru/viewbio.jsp?EID=1026391

Messages are not required to have anything in any of the headers. In particular, it is OK to have no valid "From:" header (and OK to have no valid "To:" header also). Only the SMTP envelope fields are actually used, to transmit and deliver the message; the headers are not required.

How could I include electronic signature and encryption in a JavaMail message?Location: http://www.jguru.com/faq/view.jsp?EID=1032292 Created: Nov 29, 2002 Author: Lasse Koskela (http://www.jguru.com/guru/viewbio.jsp?EID=573277) Question originally posed by Patrick Wong (http://www.jguru.com/guru/viewbio.jsp?EID=1018115

You can find an example of this at http://security.dstc.edu.au/projects/java/tutorials/messaging.htmlComments and alternative answers

Link for this article does not appear to be working. Author: Christopher Lupton (http://www.jguru.com/guru/viewbio.jsp?EID=877975), Sep 11, 2003This link does not seem to be in operation anymore. Is there another link or mirror to that article by any chance ? (Excellent FAQ by the way)

Re: Link for this article does not appear to be working. Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7), Sep 11, 2003Changing the original URL down to the java bit acts as a redirect to http://www.wedgetail.com/jcsi/.

How do you send an SMS message using the JavaMail API? Location: http://www.jguru.com/faq/view.jsp?EID=1032299 Created: Nov 29, 2002 Author: Lasse Koskela (http://www.jguru.com/guru/viewbio.jsp?EID=573277) Question originally posed by mahadev hoolikeri (http://www.jguru.com/guru/viewbio.jsp?EID=1006902

First of all, you need an SMS gateway for sending SMS messages (unless you plan to code one yourself...)

Take a look at, for example, www.kannel.org for an open source SMS gateway.

http://www.kannel.org/




http://www.wedgetail.com/jcsi/

http://security.dstc.edu.au/projects/java/tutorials/messaging.html







The way you actually send messages via a gateway is largely dependent on the gateway software's APIs. Some permit just using standard SMTP commands to send (and thus permit just using the regular JavaMail API).


The Java solution would be to use SDK from www.simplwire.com Author: Shaji Kalidasan (http://www.jguru.com/guru/viewbio.jsp?EID=1015374), Dec 2, 2002You can use the Java SDK from www.simplewire.com ( remember it is not a freeware but there is limited trial period and is very easy to implement ). There are lots of demo source code available.

Alternatively you can try sending email ( now more GSM service providers accept SMTP email which can be send as SMS to mobile phones )

This is the SMS API I have worked. Consider other providers also.

Thanks & regards,Shaji Kalidasan,[email protected]

SMS from Java Author: Maxim Khukhro (http://www.jguru.com/guru/viewbio.jsp?EID=1076363), Apr 14, 2003Hi!

Take a look atSMLib tool - sending SMS via Java.http://www.unipro.ru/mobiles/smlib.htmlThis can help you

How do I send multiple messages using the same SMTP connection? When I use Transport.send(message), this always opens a new connection.Location: http://www.jguru.com/faq/view.jsp?EID=1035380 Created: Dec 8, 2002 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by Gregory Ledenev (http://www.jguru.com/guru/viewbio.jsp?EID=1034651

The send method is static and doesn't care if you have connected or not. Use sendMessage.

How do I deal with uuencoded attachments? Location: http://www.jguru.com/faq/view.jsp?EID=1041227 Created: Dec 26, 2002 Author: Christopher Koenigsberg






(http://www.jguru.com/guru/viewbio.jsp?EID=722897) Question originally posed by Rohan Desai (http://www.jguru.com/guru/viewbio.jsp?EID=1033718

First, uuencode/uudecode is not reliable (several characters vary in different implementations, and it is easy to damage, or incorrectly calculate/incompletely insert, the encoding). That's why MIME's base64 was invented.

Second, uuencoded content is simply pasted in the main message body and is not a "multipart" message (has no MIME structure) and hence does not contain "attachments" (multiple body parts), from the MIME point of view.

As far as actually doing the uuencode/decode operations... see the encode and decode methods of the MimeUtility class of the javax.mail.internet package.


How to decode uuencoded attachments Author: Robert White (http://www.jguru.com/guru/viewbio.jsp?EID=1041462), Dec 27, 2002Here's a utility class. class UUEncodedBodyPart{ private InputStream _inStreamBodyPart = null; private String _sBodyPart = null; private String _sPossibleFileName = null; private int _headerIndex = -1, _endIndex = -1;

public UUEncodedBodyPart( String bodyPart ) throws Exception { this._sBodyPart = bodyPart; if ( ! findUUEncodedAttachmentPosition() ) { throw new Exception( "UUEncodedBodyPart.ctor():BodyPart does not seem to be uuEncoded" ); } else { ByteArrayInputStream bStream = new ByteArrayInputStream( bodyPart.substring( _headerIndex, _endIndex + 3 ).getBytes() ); try { _inStreamBodyPart = MimeUtility.decode( bStream, "uuencode" ); } catch ( MessagingException e ) { // This just to show what kind of exception can occur throw e; } } }


private boolean findUUEncodedAttachmentPosition() { int beginIndex = -1; String sSearch = _sBodyPart; if ( ( beginIndex = sSearch.lastIndexOf( BEGIN ) ) != -1 ) { int eolIndex = sSearch.indexOf( LINE_SEPARATOR, beginIndex ); String possibleHeader = sSearch.substring( beginIndex, eolIndex ); StringTokenizer st = new StringTokenizer( possibleHeader ); String possibleFileSize; st.nextToken();// this should be the begin

try { possibleFileSize = st.nextToken(); int fileSize = Integer.parseInt( possibleFileSize ); _sPossibleFileName = st.nextToken();

// now we know we have a UUencode header. _headerIndex = beginIndex; _endIndex = sSearch.indexOf( END, beginIndex ); return true; } catch ( NoSuchElementException nsee ) { // there are no more tokens in this tokenizer's string } catch ( NumberFormatException nfe ) { // possibleFileSize was non-numeric } } return false; }

/** * Gets the fileName attribute of the UUEncodedBodyPart object * * @return The fileName value */ public String getFileName() { return ( _sPossibleFileName ); }

/** * Gets the inputStream attribute of the UUEncodedBodyPart object * * @return The inputStream value */ public InputStream getInputStream() { return ( _inStreamBodyPart ); }

}

Now, to use the utility class... ... First, we have to recognize whether the JavaMail Part we are dealing with has String content (which means it may be UUencoded). If it is, we'll call a method to attempt to decode the attachment and save it as a file. If it cannot be decoded, it might just be a plain old text Part, such as the body of a text e-mail. And, of course, if it's not String content that's a whole other ball o' wax. private Message classifyPart( Part part ) throws MessagingException, IOException { Object oContent = part.getContent(); if ( oContent instanceof String ) { String sPart = (String)oContent; // check for uuencoded files... if ( detachUUencodedFile( sPart ) ) { // file was written! } else { // error decoding Part or it's not uuencoded } } else if ( oContent instanceof Multipart ) { // snip... } else if ( oContent instanceof Message ) { // snip... } else { // unknown Part content } }

Here's the part that writes the attachment as a file. private boolean detachUUencodedFile( String sPart ) throws IOException { try { // c'tor throws exception if string is not uuencoded, // or if there is a problem decoding the string. UUEncodedBodyPart bp = new UUEncodedBodyPart( sPart ); File file = new File( bp.getFileName() ); save( file, bp.getInputStream() ); return true; } catch ( IOException exIO ) { dbgOut( "detachUUencodedFile: " + exIO.getMessage() );

throw exIO; } catch ( Exception ex ) { dbgOut( "detachUUencodedFile: " + ex.getMessage() ); } return false; }

static public long save( File file, InputStream is ) throws IOException { if ( ! file.createNewFile() ) { file.delete(); if ( file.exists() ) { throw new IOException( "file exists and cannot be deleted: '" + file.getAbsolutePath() + "'"); } } BufferedOutputStream bos = null; long lFileSize = 0; StringBuffer sb = new StringBuffer(); try { bos = new BufferedOutputStream( new FileOutputStream( file ) ); int iChar; while ( ( iChar = is.read() ) != -1 ) { sb.append((char)iChar); bos.write( iChar ); lFileSize++; System.out.println( sb.toString() ); } } catch ( IOException exIO ) { // explicitly close our output stream before deleting partial file if ( null != bos ) { bos.flush(); bos.close(); bos = null; } // don't leave behind any partial files if ( file.exists() ) file.delete();

// throw the exception again throw exIO; } finally { // explicitly close our output stream if ( null != bos )

{ bos.flush(); bos.close(); } } return lFileSize; }

Re: How to decode uuencoded attachments Author: ratheesh nair (http://www.jguru.com/guru/viewbio.jsp?EID=1056362), Feb 12, 2003Please tell me what is this BEGIN, END etc,.,

Re: How to decode uuencoded attachments Author: Dor Perl (http://www.jguru.com/guru/viewbio.jsp?EID=1060216), Feb 25, 2003This is a nice code. However, it is dangerous to use it in a production server. The UUEncodedBodyPart constructor accepts a String and therefore an OutOfMemoryException might occur when the UUEncoded attachment is very big as this code requires keeping all of it in the memory. Maybe one attachment can not exceed an avarage amount of memory that a nowadays server has, but think about what might happen when several Threads in the same server handles some big UUEncoded attachments at the same time.

BEGIN END LINE.. Author: beyler olivier (http://www.jguru.com/guru/viewbio.jsp?EID=1230141), Mar 1, 2005What is the associated string to this constante ? Best regards

How do I send email to a POP server?Location: http://www.jguru.com/faq/view.jsp?EID=1041233 Created: Dec 26, 2002 Author: Christopher Koenigsberg (http://www.jguru.com/guru/viewbio.jsp?EID=722897)

You don't send email to a POP server. You send email to an address which is handled by an SMTP server. Then there may be a POP server which clients can use, to read the mail, after it is accepted and delivered locally, by the associated SMTP server.

How can I tell the JavaMail API where to create a mail folder on my IMAP server?Location: http://www.jguru.com/faq/view.jsp?EID=1041237 Created: Dec 26, 2002 Author: Christopher Koenigsberg (http://www.jguru.com/guru/viewbio.jsp?EID=722897) Question originally posed by Narayan Joshi (http://www.jguru.com/guru/viewbio.jsp?EID=965315






The JavaMail API, for an IMAP server, sends the IMAP command, to create a new folder, to the IMAP server. JavaMail does not create anything; the IMAP server creates the folder, when requested to by the JavaMail API's IMAP client commands.

And then it's up to the IMAP server, where it wants to create this new folder, given its own configuration, in the underlying local filesystem, for folder locations relative to users' home directories (e.g. "/path/to/user1/path/to/folder1").

The IMAP server has to be able to FIND a folder, so it can't just create a folder anywhere; it has to create the folder in the place it knows to look for them, for a particular user. Either this is a single fixed location (e.g. "/home/user1/folder1") or it might have a folder search path taking multiple alternative possibilities, and this depends on the IMAP server. This has nothing to do with the JavaMail API.

When does folder.getMessages() get the messages? Location: http://www.jguru.com/faq/view.jsp?EID=1041241 Created: Dec 26, 2002 Author: Christopher Koenigsberg (http://www.jguru.com/guru/viewbio.jsp?EID=722897) Question originally posed by chirag patel (http://www.jguru.com/guru/viewbio.jsp?EID=1006915

The JavaDoc for folder.getMessages says:

....Folder implementations are expected to provide light-weight Message objects, which get filled on demand. .....

And in the JavaDoc for Message it says:

A Message object obtained from a folder is just a lightweight reference to the actual message. The Message is 'lazily' filled up (on demand) when each item is requested from the message. Note that certain folder implementations may return Message objects that are pre-filled with certain user-specified items.

I'm getting my Session with Session.getDefaultInstance and its not getting changes to the Properties passed in. What's wrong? Location: http://www.jguru.com/faq/view.jsp?EID=1046816 Created: Jan 15, 2003 Modified: 2003-03-29 22:39:43.174Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

In getDefaultInstance(Properties props), the Properties are only used in the initial call. Future calls ignore the setting, returning the previously created Session. If you need to change the Properties, like to change SMTP servers, you should use getInstance(Properties props) instead.

How are connection timeouts implemented?Location: http://www.jguru.com/faq/view.jsp?EID=1052347 Created: Jan 31, 2003 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

According to Bill Shannon, primary JavaMail engineer: The timeout is implemented by starting a thread to make the connection and if it doesn't complete before the





http://java.sun.com/j2ee/sdk_1.3/techdocs/api/




timeout, the thread is abandoned and left to die. (Unfortunately, there's no way to actually abort the connection attempt.)

How can I log the debug messages to a file when I session.setDebug(true)? Location: http://www.jguru.com/faq/view.jsp?EID=1052582 Created: Jan 31, 2003 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

With the 1.3 release of JavaMail, there is support for session-level output streams. Call public void setDebugOut(java.io.PrintStream out) to change the stream from System.out. Passing in a value of null will use System.out for output.

How do I send a message where a character with an accent is in the subject? Location: http://www.jguru.com/faq/view.jsp?EID=1052586 Created: Jan 31, 2003 Author: Christopher Koenigsberg (http://www.jguru.com/guru/viewbio.jsp?EID=722897) Question originally posed by Alfonso Garzon (http://www.jguru.com/guru/viewbio.jsp?EID=1045052

Email headers can only contain 7-bit US ASCII characters, according to the Internet standards (mainly RFC 2822, also 2821). For any characters outside that charset, they have to be encoded first. Your (sender's) email client should display the proper characters (accented etc.) to you when you are composing the message, but needs to encode them for transmission. The recipient's email client needs to decode them, for display at the other end.

See RFC 2047 for details about encoding characters in email headers.

Here are some classic examples, from RFC 2047, of some encoded text in email headers:

From: =?ISO-8859-1?Q?Olle_J=E4rnefors?= <[email protected]>

From: Nathaniel Borenstein <[email protected]> (=?iso-8859-8?b?7eXs+SDv4SDp7Oj08A==?=)

The first example is of some iso-8859-1 characters, encoded using the "Q" encoding (same as "quoted-printable" content-transfer-encoding for body parts). The second example is some iso-8859-8 characters, using the "B" encoding (same as "base64" content-transfer-encoding for body parts).

Unlike body parts which need a separate header to tell how they are encoded, in the headers like these, as you see, the start of the escape sequence tells what encoding scheme is used, and what character set has been encoded in it.

JavaMail 1.3 supports group addresses. What are group addresses?Location: http://www.jguru.com/faq/view.jsp?EID=1052592 Created: Jan 31, 2003 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)









RFC 822 defines what a group address is. It allows one to prefix a list of email addresses with a label, followed by a colon, as in:jGurus: [email protected], John <[email protected]>, "Joe" <[email protected]>

How can I optimize sendmail for use with JavaMail-based programs?Location: http://www.jguru.com/faq/view.jsp?EID=1053565 Created: Feb 4, 2003 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

According to Joseph Shraibman on the JAVAMAIL-INTEREST mailing list:

JavaMail checks if the connection is good by sending a NOOP command. It does this before sending each mail message. The problem is that after 19 NOOPs sendmail starts slowing down. To fix this (if you control the mail server) is to set MAXNOOPCOMMANDS to 0 in sendmail/srvrsmtp.c and recompile sendmail. If you don't control the server you have to count how many messages you send and reconnect after 19 of them.

Where can I get a custom JavaMail javax.mail.Store to access an RSS feed?Location: http://www.jguru.com/faq/view.jsp?EID=1059429 Created: Feb 22, 2003 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

The open source app ZOE offers one.

How can I configure sendmail to route messages through James for filtering/scanning?Location: http://www.jguru.com/faq/view.jsp?EID=1060659 Created: Feb 25, 2003 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

See the help document at http://james.apache.org/james_and_sendmail.html.

How can I contribute to the James project?Location: http://www.jguru.com/faq/view.jsp?EID=1060660 Created: Feb 25, 2003 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

Contribution information is available from http://james.apache.org/contribute.html.

How much does James cost?Location: http://www.jguru.com/faq/view.jsp?EID=1060661 Created: Feb 25, 2003 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

James can be freely used and is released under the Apache Software License. http://james.apache.org/license.html.

Can JavaMail be used from a Message Driven Bean? The EJB specifictation requires that the bean implementation must be single-threaded. Isn't JavaMail multi-threaded? If so, can it be used from a Message Driver Bean?

http://james.apache.org/license.html



http://james.apache.org/contribute.html



http://james.apache.org/james_and_sendmail.html



http://guests.evectors.it/zoe/itstories/





Location: http://www.jguru.com/faq/view.jsp?EID=1063436 Created: Mar 5, 2003 Author: Jens Dibbern (http://www.jguru.com/guru/viewbio.jsp?EID=9896) Question originally posed by Shiv Kumar (http://www.jguru.com/guru/viewbio.jsp?EID=844764

You should configure a JavaMail resource for your EJB container and access it by JNDI. It works just like JavaMail in an application without setting up the connection first. You just get it from the JNDI tree. This should work for your MDB just like it workes for my stateless session beanComments and alternative answers

JavaMail and Message Driven Bean Author: Ram V.L.T (http://www.jguru.com/guru/viewbio.jsp?EID=449849), Dec 17, 2004Click Here for a good example of Working with the new Message Driven Beans and JMS

Why do binary file attachment sizes increase by about 15-20% when sending a message?Location: http://www.jguru.com/faq/view.jsp?EID=1071376 Created: Mar 29, 2003 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

When included as an attachment, binary files are encoded to be 7-bit safe. This means that what used to be 8-bits per byte is now 7, hence the increase.

Can I create a MimeMessage using one Session say session1 and send the mail using another Session session2? Location: http://www.jguru.com/faq/view.jsp?EID=1071379 Created: Mar 29, 2003 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by manjunath somashekar (http://www.jguru.com/guru/viewbio.jsp?EID=1063490

Sure. import java.util.Properties;import javax.mail.*;import javax.mail.internet.*;

public class MailExample { public static void main (String args[]) throws Exception { String host = args[0]; String from = args[1]; String to = args[2]; String username = args[3]; String password = args[4];







http://www.onjava.com/pub/a/onjava/2001/05/22/ejb_msg.html?page=1







Session session2 = Session.getInstance(props, null);

// Send message Transport transport = session2.getTransport("smtp"); transport.connect(host, username, password); transport.sendMessage(message, message.getAllRecipients()); transport.close(); }}

How do I display POP3 message body properly in a browser?

When i use message.writeTO() it displays without line breaks. Location: http://www.jguru.com/faq/view.jsp?EID=1071381 Created: Mar 29, 2003 Author: Christopher Koenigsberg (http://www.jguru.com/guru/viewbio.jsp?EID=722897) Question originally posed by srinivas Rao (http://www.jguru.com/guru/viewbio.jsp?EID=1062741

Of course an HTML browser is rendering HTML, meaning that it is ignoring whitespace, including newlines.

You could try enclosing your text in a "<pre>" element. Or you could insert the HTML for linebreaks yourself ("<br>" or else enclose in "<p>" elements).


How do I display POP3 message body properly in a browser? When i use message.writeTO() it displays without line breaks. Author: Md Razzak Sorker (http://www.jguru.com/guru/viewbio.jsp?EID=1115939), Sep 17, 2003First you have to check the message mimeType is text/html or not if so then you have to read the inputsteam then make a bufferedreader and read the content line by line and print it, the code should look somthing like this: <% if (msg.isMimeType("text/html")) { BufferedReader reader = new BufferedReader(new InputStreamReader(msg.getInputStream())); while((msgText=reader.readLine())!=null) { %> <%= msgText %> <% } } %>




Formatting a brwser friendly message Author: James Fuhr (http://www.jguru.com/guru/viewbio.jsp?EID=1140414), Jan 21, 2004The standard linebreak in an email appears as \r\n. If you are using an IDE such as NetBeans, set a Watch on the variable storing the line and run in debug. You should see those escape characters. What I ended up doing, was manually insert the line break HTML tag while reading each line of the message. The sample code below checks the content type of the message. If it is text/plain, it creates the <BR> tags InputStream is = messagePart.getInputStream();

BufferedReader reader = new BufferedReader(new InputStreamReader(is));

String thisLine=reader.readLine();StringBuffer msg = new StringBuffer();

while (thisLine!=null) { msg.append(thisLine); //check the content type; append if plain text if(mailMessage.contentType.startsWith("text/plain")) { msg.append("<br>"); } thisLine=reader.readLine();}

Can someone please specify the technique of message sorting within folder according to some criteria say Header Information? Location: http://www.jguru.com/faq/view.jsp?EID=1071382 Created: Mar 29, 2003 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by Wolverine X (http://www.jguru.com/guru/viewbio.jsp?EID=1060213

Since the Message class doesn't implement the Comparable interface, you'll need to create a custom Comparator. Then, you can call Arrays.sort(arrayOfMessages, comparator).

Is it possible to send a message that identifies if the mailreader is configurate to read HTML or text mail? Location: http://www.jguru.com/faq/view.jsp?EID=1072695 Created: Apr 2, 2003 Modified: 2003-04-03 04:48:51.163Author: Christopher Koenigsberg (http://www.jguru.com/guru/viewbio.jsp?EID=722897) Question originally posed by marcelo serra (http://www.jguru.com/guru/viewbio.jsp?EID=1071681

The MIME content-type "multipart/alternative" is intended so you can send different versions of the same "message" all bundled together, e.g. an HTML version, a plain







text version, maybe an audio version, etc., and let the remote mail reading client decide for itself, which one is appropriate for it, and for its current user.


On the multipart/alternative... Author: Gabi Lacatus (http://www.jguru.com/guru/viewbio.jsp?EID=1071969), Aug 19, 2003I noticed that the order of the parts count too.

If I put the text/plain first and then a text/html then pine for example opens the text/plain part and Outlook opens the html part(But it also shows the text/plain part as an attachment while other mail clients do not - WHY?)

If the text/html part is inserted first then even pine opens the html code :((...how come?Could it be a server configuration matter?

Re: On the multipart/alternative... Author: Neil Boemio (http://www.jguru.com/guru/viewbio.jsp?EID=1128781), Nov 17, 2003Did you ever figure out the issue with Outlook showing both the HTML part and the Text part of the multipart/alternative e-mail?

Example Code Author: Kevin Bridges (http://www.jguru.com/guru/viewbio.jsp?EID=1119238), Oct 2, 2003// Create the message to send Properties props = new Properties(); props.put("mail.smtp.host", "localhost"); Session session = Session.getInstance(props,null); MimeMessage message = new MimeMessage(session);

// Create the email addresses involved InternetAddress from = new InternetAddress("[email protected]"); InternetAddress to = new InternetAddress("[email protected]");

// Fill in header message.setSubject("I am a multipart text/html email" ); message.setFrom(from); message.addRecipient(Message.RecipientType.TO, to);

// Create a multi-part to combine the parts Multipart multipart = new MimeMultipart();

// Create your text message part BodyPart messageBodyPart = new MimeBodyPart(); messageBodyPart.setText("Here is your plain text message");

// Add the text part to the multipart multipart.addBodyPart(messageBodyPart);

// Create the html part messageBodyPart = new MimeBodyPart(); String htmlText = "<H1>I am the html part</H1>"; messageBodyPart.setContent(htmlText, "text/html");

// Add html part to multi part multipart.addBodyPart(messageBodyPart);


// Send message Transport.send(message);

Re: Example Code Author: sarah sarah (http://www.jguru.com/guru/viewbio.jsp?EID=1250544), Jun 27, 2005This will work - both the html and plain text will be sent, but only the one favoured by the recipient program will be displayed. BUT, you forgot to make it multipart/alternative! the way it is, both types will be displayed. To make this work as intended, it must be Multipart multipart = new MimeMultipart("alternative"); Also, just thought I'd mention that apparently the order is important. Add the plain text before the html version, since AOL users always get both and the html doesn't display right (so they'd have to scroll all the way to the bottom). I haven't tested this out myself though.

Re[2]: Example Code Author: Java Buddha (http://www.jguru.com/guru/viewbio.jsp?EID=1251857), Jul 5, 2005Hi Sarah, If I add HTML version before Text version it works fine in most of the clients Pine, Micorsoft outlook, gmail etc., I didn't check it in AOL as I don't have an account. But then as you said, I tried adding the HTML version after Text version and checked the mail sent with Pine software. Pine now displays the HTML and Text both, previously it was displaying only Text version. Kindly help me out of this. Thanks, Shenbag

What is the format of the Content-ID header?Location: http://www.jguru.com/faq/view.jsp?EID=1075898 Created: Apr 12, 2003 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

The Content-ID header, set with setContentID, needs to be formatted like <cid>. You need to make sure the < and > signs are present. Some mail readers work without them, many don't.

What's new in JavaMail 1.3.1?Location: http://www.jguru.com/faq/view.jsp?EID=1079414




Created: Apr 25, 2003 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

JavaMail 1.3.1 includes over 20 bug fixes, as well as support for DIGEST-MD5 authentication in the SMTP provider (courtesy of Dean Gibson).

How do I configure JavaMail to work through my proxy server? Location: http://www.jguru.com/faq/view.jsp?EID=1080812 Created: Apr 30, 2003 Author: Christopher Koenigsberg (http://www.jguru.com/guru/viewbio.jsp?EID=722897) Question originally posed by SKD SKD (http://www.jguru.com/guru/viewbio.jsp?EID=1077304

Proxy servers redirect HTTP connections, not JavaMail connections. In order to connect from behind a firewall for POP3, IMAP, and SMTP access, you need to connect to a SOCKS server. Your sys admin should provide you with SOCKS client software, to install on your client machine. (Hummingbird, for instance, for Windows; various clients for Solaris; I think Linux, at least RedHat, already comes with a SOCKS client?) The SOCKS versions have to match, on the client and SOCKS server.

It's transparent to network applications, e.g. they just think they are making normal connections, but the TCP stack internally tunnels these through SOCKS instead. So the only thing to configure is the SOCKS client software on the host.

How do I get the size of a message that I am going to send? The getSize() method works fine with received message but returns -1 if I use it with a message that I am going to send! Location: http://www.jguru.com/faq/view.jsp?EID=1080814 Created: Apr 30, 2003 Author: fernando fernandes (http://www.jguru.com/guru/viewbio.jsp?EID=400255) Question originally posed by fernando fernandes (http://www.jguru.com/guru/viewbio.jsp?EID=400255

Get the InputStream for the message with getInputStream() and count the bytes.

Where can I find a regular expression to validate an email address?Location: http://www.jguru.com/faq/view.jsp?EID=1088553 Created: May 27, 2003 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

One is available at http://www.ex-parrot.com/~pdw/Mail-RFC822-Address.html.Comments and alternative answers

Here is the regular Expression for Email validation Author: praveen J (http://www.jguru.com/guru/viewbio.jsp?EID=1140476), Jan 21, 2004public static boolean isValidEmailAddress(String email) { String regex = "^[_A-Za-z0-9-]+(\\.[_A-Za-z0-9-]+)*@[A-Za-z0-9-]+(\\.[A-Za-z0-9-]+)*(\\.[_A-Za-z0-9-]+)" ; return email.matches(regex) ; }

http://www.ex-parrot.com/~pdw/Mail-RFC822-Address.html










How do I find out if an IMAP server supports a particular capability?Location: http://www.jguru.com/faq/view.jsp?EID=1093517 Created: Jun 12, 2003 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

If you have a folder open, you can do this: import com.sun.mail.imap.IMAPFolder;import com.sun.mail.imap.protocol.IMAPProtocol;

IMAPProtocol p = ((IMAPFolder)folder).getProtocol(); if (p.hasCapability("FOO")) ...See the com.sun.mail.imap package javadocs for additional details and important disclaimers.

How do I get rid of unused connections? Doing something like checking for the existance of an IMAP folder leaves the connection open. Location: http://www.jguru.com/faq/view.jsp?EID=1110073 Created: Aug 21, 2003 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by George Lindholm (http://www.jguru.com/guru/viewbio.jsp?EID=1065564

You can set the connection pool timeout property (mail.imap.connectionpooltimeout for imap). Then... according to JavaMail architect Bill Shannon:

Because JavaMail doesn't use a separate thread to manage the timeout, it only checks for connections to timeout when you do something with the Store. Adding a call to store.isConnected() after the timeout should trigger the timeout/disconnect.

How do I package a JavaMail application into a single jar file along with the mail.jar and activation.jar?Location: http://www.jguru.com/faq/view.jsp?EID=1111058 Created: Aug 26, 2003 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7) Question originally posed by Glenn Wiens (http://www.jguru.com/guru/viewbio.jsp?EID=458756

You need to unjar all the JAR files into a single directory tree and then JAR them back up. The trick is preserving the location of some files:

425 Fri Dec 01 00:05:16 EST 2000 META-INF/javamail.default.providers 12 Fri Dec 01 00:05:16 EST 2000 META-INF/javamail.default.address.map 1124 Fri Dec 01 00:05:16 EST 2000 META-INF/javamail.charset.map 469 Fri Dec 01 00:05:16 EST 2000 META-INF/mailcapMake sure these end up in the same location in the new JAR.









How do I calculate the size of an entire folder?Location: http://www.jguru.com/faq/view.jsp?EID=1137806 Created: Jan 8, 2004 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

For POP3, you can get this information for the INBOx with <size=2>com.sun.mail.pop3.POP3Folder.getSize()</size>.

For IMAP, the protocol doesn't support this feature. You would need to sum the sizes of the contained messages.

How do I get the sender of an email?Location: http://www.jguru.com/faq/view.jsp?EID=1251270 Created: Jun 30, 2005 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

The getFrom() of Message is one way, but the getSender() method of MimeMessage reads the RFC 822 Sender header field. A value of null is returned if the header isn't present. Comparing the two allows you to see if someone is lying. :-)

How do I set the default character encoding for JavaMail to use?Location: http://www.jguru.com/faq/view.jsp?EID=1251271 Created: Jun 30, 2005 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

The mail.mime.charset system property is used. If unset, file.encoding is used instead.

How do I find out the number of deleted messages in a folder?Location: http://www.jguru.com/faq/view.jsp?EID=1251272 Created: Jun 30, 2005 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

Added with JavaMail 1.3, the getDeletedMessageCount() method of Folder gets this for you. A -1 may be returned if the server doesn't support the operation.

How is JavaMail licensed?Location: http://www.jguru.com/faq/view.jsp?EID=1255606 Created: Jul 29, 2005 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

As of July 2005, JavaMail is licensed with GlassFish under Sun's CDDL open source license.

What version of JavaMail does GlassFish contain?Location: http://www.jguru.com/faq/view.jsp?EID=1255607 Created: Jul 29, 2005 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

According to Bill Shannon of Sun, the July 2005 release of GlassFish contains JAF 1.1ea and a version of JavaMail slightly newer than 1.3.3ea.



http://glassfish.dev.java.net/











What is GlassFish?Location: http://www.jguru.com/faq/view.jsp?EID=1255621 Created: Jul 29, 2005 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

The GlassFish Project is Sun's open source application server project. Found at https://glassfish.dev.java.net/, you can participate in the development of the latest version of Sun's Java System Application Server PE 9.0. It is based on Java Enterprise Edition 5.

What string do I pass to SimpleDateFormat to format the message date to spec - getSentDate() method of Message?Location: http://www.jguru.com/faq/view.jsp?EID=1259133 Created: Aug 22, 2005 Author: John Zukowski (http://www.jguru.com/guru/viewbio.jsp?EID=7)

There is no need to create a custom DateFormat. The MailDateFormat class found in the javax.mail.internet handles all this for you. It formats and parses the date based on the draft-ietf-drums-msg-fmt-08 dated January 26, 2000. This is a followup spec to RFC-822.



https://glassfish.dev.java.net/



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