#telnet mail  25 
Trying  172 . 16 . 1 . 4 ...
Connected to prog.sngb.com.
Escape character is '^]'.
 220  mail.domain.com ESMTP Tue,  22  Feb  2005   10 : 31 : 22  + 0500  (ESK)
ehlo domain.com
 250 -mail.domain.com Hello host [ 192 . 168 . 1 . 1 ], pleased to meet you
 250 -8BITMIME
 250 -SIZE
 250 -DSN
 250 -ONEX
 250 -ETRN
mail from:billi@microsoft.com
 250  billi@microsoft.com... Sender ok
rcpt to:root@hotbox.ru
 250  root@hotbox.ru... Recipient ok
data
 354  Enter mail, end with "." on a line by itself
This messages
.
 250  KAA12757 Message accepted for delivery
quit
 221  mail.domain.com closing connection
Connection closed by foreign host.