[CentOS] Sending Email Via Telnet

Tue Oct 16 14:42:31 UTC 2012
Joseph Spenner <joseph85750 at yahoo.com>

From: John Reddy <linuxpencil at hotmail.com>
To: centos at centos.org 
Sent: Tuesday, October 16, 2012 7:30 AM
Subject: Re: [CentOS] Sending Email Via Telnet

>So I go to this page and get an example of how to do this:
>and follow the example:
>[root at mydomain john]# telnet 25
>Connected to
>Escape character is '^]'.
>HELO justtesting
>MAIL FROM: testing at gmail.com
>RCPT TO: testing at gmail.com
>To: testing at gmail.com
>From: testing at gmail.com
>Subject: testing
>Date: Tu, Oct 2012 10:21:11 -0500

Something isn't quite right with your setup.  When you do the "HELO" command, the server should reply with something.  For example:

$ telnet smtp.comcast.net 25
Connected to smtp.comcast.net.
Escape character is '^]'.
220 omta12.emeryville.ca.mail.comcast.net comcast ESMTP server ready
HELO comcast.net
250 omta12.emeryville.ca.mail.comcast.net hello [], pleased to meet you

Does the mail server ever return anything back to you?