root@mail:~/Desktop# telnet 127.0.0.1 25
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '^]'.
220 abcmail.abc-telecom.az ESMTP Postfix (Ubuntu)
helo 62.217.135.244
250 abcmail.abc-telecom.az
mail from: [email protected]
250 2.1.0 Ok
rcpt to: [email protected]
250 2.1.5 Ok
data
354 End data with <CR><LF>.<CR><LF>
Subject: 123456
qwerty
...
.
250 2.0.0 Ok: queued as 06C6111C2A2E
quit
221 2.0.0 Bye
Connection closed by foreign host.
root@mail:~/Desktop#