Responses to certain commands (such as LIST or RETR) contain a long data stream. This is transferred as a series of lines, terminated by a "CRLF '.' CRLF" sequence, just like in SMTP.
| Example 4.14. POP3 protocol sample |
|---|
+OK POP3 server ready USER account +OK User name is ok PASS password +OK Authentication successful LIST +OK Listing follows 1 5758 2 232323 3 3434 . RETR 1 +OK Mail body follows From: sender@sender.com To: account@receiver.com Subject: sample mail This is a sample mail message. Lines beginning with ..are escaped, another '.' character is perpended which is removed when the mail is stored by the client. . DELE 1 +OK Mail deleted QUIT +OK Good bye |
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