SMTP Example
Make sure your telnet client is set to local echo, CRLF to end lines.
[arnold@localhost 01]$ telnet 127.0.0.1 25
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '^]'.
220 localhost.localdomain ESMTP Sendmail 8.11.6/8.11.6; Mon, 6 Jan 2003 01:46:09 -0500
HELO localhost
250 localhost.localdomain Hello localhost.localdomain [127.0.0.1], pleased to meet you
MAIL FROM:
250 2.1.0 ... Sender ok
RCPT TO:
250 2.1.5 ... Recipient ok
DATA
354 Enter mail, end with "." on a line by itself
Subject: This is the subject
This is a bogus message!!
Here is another line!!
.
250 2.0.0 h066kmZ08834 Message accepted for delivery
QUIT