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10. Example POP3 Session

S: <wait for connection on TCP port 110>
C: <open connection>
S: +OK POP3 server ready ``<[email protected]>``
C: APOP mrose c4c9334bac560ecc979e58001b3e22fb
S: +OK mrose's maildrop has 2 messages (320 octets)
C: STAT
S: +OK 2 320
C: LIST
S: +OK 2 messages (320 octets)
S: 1 120
S: 2 200
S: .
C: RETR 1
S: +OK 120 octets
S: <the POP3 server sends message 1>
S: .
C: DELE 1
S: +OK message 1 deleted
C: RETR 2
S: +OK 200 octets
S: <the POP3 server sends message 2>
S: .
C: DELE 2
S: +OK message 2 deleted
C: QUIT
S: +OK dewey POP3 server signing off (maildrop empty)
C: <close connection>
S: <wait for next connection>

Session Explanation:

  1. Connection: Client connects to server on TCP port 110
  2. Greeting: Server sends greeting with timestamp for APOP
  3. Authentication: Client authenticates using APOP command
  4. STAT: Client checks mailbox status (2 messages, 320 octets)
  5. LIST: Client lists all messages
  6. RETR/DELE: Client retrieves and deletes message 1
  7. RETR/DELE: Client retrieves and deletes message 2
  8. QUIT: Client quits, server performs deletions and closes connection

Note: This example demonstrates a complete POP3 session using APOP authentication. The session ends with all messages deleted from the server.

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