McGraw-Hill©The McGraw-Hill Companies, Inc., 2000 Chapter 22 Simple Mail Transfer Protocol (SMTP)
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Transcript of McGraw-Hill©The McGraw-Hill Companies, Inc., 2000 Chapter 22 Simple Mail Transfer Protocol (SMTP)
![Page 1: McGraw-Hill©The McGraw-Hill Companies, Inc., 2000 Chapter 22 Simple Mail Transfer Protocol (SMTP)](https://reader034.fdocuments.in/reader034/viewer/2022051211/5513bc9c55034653298b478f/html5/thumbnails/1.jpg)
McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
Chapter 22
Simple MailTransfer Protocol
(SMTP)
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McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
CONTENTSCONTENTS• USER AGENT (UA)• ADDRESSES• DELAYED DELIVERY• ALIASES• MAIL TRANSFER AGENT (MTA)• COMMANDS AND RESPONSES• MAIL TRANSFER PHASES• MIME• MAIL DELIVERY • MAIL ACCESS PROTOCOLS
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McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
Figure 22-1
SMTP concept
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McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
Figure 22-2
UAs and MTAs
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McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
Figure 22-3
Relay MTAs
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McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
Figure 22-4
Mail gateway
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McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
USERAGENT
(UA)
22.122.1
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McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
Figure 22-5
Format
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McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
ADDRESSES
22.222.2
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Figure 22-6
Address
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McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
DELAYEDDELIVERY
22.322.3
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McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
Figure 22-7
Sender-sitedelay
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McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
Figure 22-8
Receiver-sitedelay
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McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
ALIASES
22.422.4
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Figure 22-9
Alias expansion
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McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
Figure 22-10
One-to-many expansion
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McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
Figure 22-11
Many-to-oneexpansion
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McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
MAILTRANSFER
AGENT
22.522.5
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Figure 22-12
Email system
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McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
COMMANDSAND
RESPONSES
22.622.6
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McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
Figure 22-13
Commands and responses
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Figure 22-14
Command format
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McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
MAILTRANSFER
PHASES
22.722.7
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Figure 22-15
Connection establishment
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Figure 22-16
Message transfer
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Figure 22-17
Connection termination
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MULTIPURPOSEINTERNET
MAIL EXTENSIONS(MIME)
22.822.8
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Figure 22-18
MIME
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Figure 22-19
MIME header
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Figure 22-20
Base64
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Figure 22-21
Quoted-printable
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MAILDELIVERY
22.922.9
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Figure 22-22
Email delivery
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MAIL ACCESSPROTOCOLS
22.1022.10
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Figure 22-22
POP3