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Lecture TCP-IP protocol suite - Chapter 22: Simple Mail Transfer Protocol (SMTP)

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The main contents of this chapter include all of the following: User agent (UA), addresses, delayed delivery, aliases, mail transfer agent (MTA), commands and responses, mail transfer phases, mime, mail delivery, mail access protocols. | Chapter 22 Simple Mail Transfer Protocol (SMTP) CONTENTS USER AGENT (UA) ADDRESSES DELAYED DELIVERY ALIASES MAIL TRANSFER AGENT (MTA) COMMANDS AND RESPONSES MAIL TRANSFER PHASES MIME MAIL DELIVERY MAIL ACCESS PROTOCOLS Figure 22-1 SMTP concept Figure 22-2 UAs and MTAs Figure 22-3 Relay MTAs Figure 22-4 Mail gateway USER AGENT (UA) 22.1 Figure 22-5 Format ADDRESSES 22.2 Figure 22-6 Address DELAYED DELIVERY 22.3 Figure 22-7 Sender-site delay Figure 22-8 Receiver-site delay ALIASES 22.4 Figure 22-9 Alias expansion Figure 22-10 One-to-many expansion Figure 22-11 Many-to-one expansion MAIL TRANSFER AGENT 22.5 Figure 22-12 Email system COMMANDS AND RESPONSES 22.6 Figure 22-13 Commands and responses Figure 22-14 Command format MAIL TRANSFER PHASES 22.7 Figure 22-15 Connection establishment Figure 22-16 Message transfer Figure 22-17 Connection termination MULTIPURPOSE INTERNET MAIL EXTENSIONS (MIME) 22.8 Figure 22-18 MIME Figure 22-19 MIME header Figure 22-20 Base64 Figure 22-21 Quoted-printable MAIL DELIVERY 22.9 Figure 22-22 Email delivery MAIL ACCESS PROTOCOLS 22.10 Figure 22-22 POP3 | Chapter 22 Simple Mail Transfer Protocol (SMTP) CONTENTS USER AGENT (UA) ADDRESSES DELAYED DELIVERY ALIASES MAIL TRANSFER AGENT (MTA) COMMANDS AND RESPONSES MAIL TRANSFER PHASES MIME MAIL DELIVERY MAIL ACCESS PROTOCOLS Figure 22-1 SMTP concept Figure 22-2 UAs and MTAs Figure 22-3 Relay MTAs Figure 22-4 Mail gateway USER AGENT (UA) 22.1 Figure 22-5 Format ADDRESSES 22.2 Figure 22-6 Address DELAYED DELIVERY 22.3 Figure 22-7 Sender-site delay Figure 22-8 Receiver-site delay ALIASES 22.4 Figure 22-9 Alias expansion Figure 22-10 One-to-many expansion Figure 22-11 Many-to-one expansion MAIL TRANSFER AGENT 22.5 Figure 22-12 Email system COMMANDS AND RESPONSES 22.6 Figure 22-13 Commands and responses Figure 22-14 Command format MAIL TRANSFER PHASES 22.7 Figure 22-15 Connection establishment Figure 22-16 Message transfer Figure 22-17 Connection termination MULTIPURPOSE INTERNET MAIL EXTENSIONS (MIME) 22.8 Figure 22-18 MIME Figure 22-19 MIME header Figure 22-20 Base64 Figure 22-21 Quoted-printable MAIL DELIVERY 22.9 Figure 22-22 Email delivery MAIL ACCESS PROTOCOLS 22.10 Figure 22-22 POP3 | Chapter 22 Simple Mail Transfer Protocol (SMTP) CONTENTS USER AGENT (UA) ADDRESSES DELAYED DELIVERY ALIASES MAIL TRANSFER AGENT (MTA) COMMANDS AND RESPONSES MAIL TRANSFER PHASES MIME MAIL DELIVERY MAIL ACCESS PROTOCOLS Figure 22-1 SMTP concept Figure 22-2 UAs and MTAs Figure 22-3 Relay MTAs Figure 22-4 Mail gateway USER AGENT (UA) 22.1 Figure 22-5 Format ADDRESSES 22.2 Figure 22-6 Address DELAYED DELIVERY 22.3 Figure 22-7 Sender-site delay Figure 22-8 Receiver-site delay ALIASES 22.4 Figure 22-9 Alias expansion Figure 22-10 One-to-many expansion Figure 22-11 Many-to-one expansion MAIL TRANSFER AGENT 22.5 Figure 22-12 Email system COMMANDS AND RESPONSES 22.6 Figure 22-13 Commands and responses Figure 22-14 Command format MAIL TRANSFER PHASES 22.7 Figure 22-15 Connection establishment Figure 22-16 Message transfer Figure 22-17 Connection termination MULTIPURPOSE INTERNET MAIL EXTENSIONS (MIME) 22.8 Figure 22-18 MIME Figure 22-19 MIME header Figure 22-20 Base64 Figure 22-21 .