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Ch22

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Transcript

  • 1. Chapter 22 Simple Mail Transfer Protocol (SMTP)
  • 2. CONTENTS
    • USER AGENT (UA)
    • ADDRESSES
    • DELAYED DELIVERY
    • ALIASES
    • MAIL TRANSFER AGENT (MTA)
    • COMMANDS AND RESPONSES
    • MAIL TRANSFER PHASES
    • MIME
    • MAIL DELIVERY
    • MAIL ACCESS PROTOCOLS
  • 3. Figure 22-1 SMTP concept
  • 4. Figure 22-2 UAs and MTAs
  • 5. Figure 22-3 Relay MTAs
  • 6. Figure 22-4 Mail gateway
  • 7. USER AGENT (UA) 22.1
  • 8. Figure 22-5 Format
  • 9. ADDRESSES 22.2
  • 10. Figure 22-6 Address
  • 11. DELAYED DELIVERY 22.3
  • 12. Figure 22-7 Sender-site delay
  • 13. Figure 22-8 Receiver-site delay
  • 14. ALIASES 22.4
  • 15. Figure 22-9 Alias expansion
  • 16. Figure 22-10 One-to-many expansion
  • 17. Figure 22-11 Many-to-one expansion
  • 18. MAIL TRANSFER AGENT 22.5
  • 19. Figure 22-12 Email system
  • 20. COMMANDS AND RESPONSES 22.6
  • 21. Figure 22-13 Commands and responses
  • 22. Figure 22-14 Command format
  • 23. MAIL TRANSFER PHASES 22.7
  • 24. Figure 22-15 Connection establishment
  • 25. Figure 22-16 Message transfer
  • 26. Figure 22-17 Connection termination
  • 27. MULTIPURPOSE INTERNET MAIL EXTENSIONS (MIME) 22.8
  • 28. Figure 22-18 MIME
  • 29. Figure 22-19 MIME header
  • 30. Figure 22-20 Base64
  • 31. Figure 22-21 Quoted-printable
  • 32. MAIL DELIVERY 22.9
  • 33. Figure 22-22 Email delivery
  • 34. MAIL ACCESS PROTOCOLS 22.10
  • 35. Figure 22-22 POP3