Telnet
SMTP testing
telnet mail.example.org 587
HELO example.org
MAIL FROM:<foo@bar.org>
RCPT TO:<webmaster@example.org>
DATA
Subject: test
Message body
.
QUIT
SMTP testing
telnet mail.example.org 587
HELO example.org
MAIL FROM:<foo@bar.org>
RCPT TO:<webmaster@example.org>
DATA
Subject: test
Message body
.
QUIT