POP3
Summary and Commands
POP3 RFC 1939
Incoming email (POP3) uses port 110
| Command |
Comment |
| USER |
Your user name for this mail server |
| PASS |
Your password |
| QUIT |
End your session |
| STAT |
Number and total size of all messages |
| LIST |
Message# and size of message |
| RETR message# |
Retrieve selected message |
| DELE message# |
Delete selected message |
| NOOP |
No-op. Keeps you connection open |
| RSET |
Reset the mailbox. Undelete deleted messages |
Normal program flow:
USER
PASS
LIST
DELE
QUIT
Example
telnet 10.10.45.250 110
#Trying 10.10.45.250...
#Connected to MACHINE_IP.
#Escape character is '^]'.
#+OK MACHINE_IP Mail Server POP3 Wed, 15 Sep 2021 11:05:34 +0300
PASS <D2xc9CgD>
#+OK 1 messages (179) octets
LIST
#+OK 1 messages (179) octets
From: Mail Server
To: Frank
subject: Sending email with Telnet
Hello Frank,
I am just writing to say hi!
.
QUIT
#+OK MACHINE_IP closing connection
#Connection closed by foreign host.