telnet localhost 25
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
220 t30.systud.msk.su ESMTP Sendmail 8.8.5/8.8.5; Thu, 14 May 1998 18:01:21 +0400
vrfy ryba@aquarium.ru
expn ryba@aquarium.ru
helo whitehouse.gov
250 t30.systud.msk.su Hello localhost [127.0.0.1], pleased to meet you
mail from: god@heavens.com
250 god@heavens.com... Sender ok
rcpt to: moshkow@ipsun.ras.ru
250 moshkow@ipsun.ras.ru... Recipient ok
data
354 Enter mail, end with "." on a line by itself
Subject: Time to pray!

This the time to pray caoming along!

God

.
250 SAA01324 Message accepted for delivery
quit