I am using sendmail. The headers from the emails I send will state something similar to this:
Return-Path: <<http://www.cjt-design.com/webmail/src//webmail/src/compose.php?send_to=cjtaylor%40cjt-design.com>cjtaylor@xxxxxxxxxxxxxx>
Received: from dedicated.stonecabin.net (root@localhost)
by cjt-design.com (8.12.10/8.12.10) with ESMTP id i94ECepN017837
for <<http://www.cjt-design.com/webmail/src//webmail/src/compose.php?send_to=cjtaylor%40cjt-design.com>cjtaylor@xxxxxxxxxxxxxx>; Mon, 4 Oct 2004 10:12:40 -0400
X-ClientAddr: 127.0.0.1
Received: from www.cjt-design.com (localhost.localdomain [127.0.0.1])
by dedicated.stonecabin.net (8.12.10/8.12.10) with SMTP id i94ECcYc017822;
Mon, 4 Oct 2004 10:12:38 -0400
Received: from 129.44.84.95
(SquirrelMail authenticated user <http://www.cjt-design.com/webmail/src//webmail/src/compose.php?send_to=cjtaylor%40cjt-design.com>cjtaylor@xxxxxxxxxxxxxx)
by www.cjt-design.com with HTTP;
Mon, 4 Oct 2004 10:12:38 -0400 (EDT)
Message-ID: <50372.129.44.84.95.1096899158.squirrel@xxxxxxxxxxxxxxxxxx>
Date: Mon, 4 Oct 2004 10:12:38 -0400 (EDT)
Subject: SSA Request
From: <http://www.cjt-design.com/webmail/src//webmail/src/compose.php?send_to=cjtaylor%40cjt-design.com>cjtaylor@xxxxxxxxxxxxxx
To: cjtaylor@xxxxxxxxxxxxxx User-Agent: SquirrelMail/1.4.2
So, assuming that the http:// links that appear here are part of the presentation of the headers to you that your webmail system is giving you, and that they are not actually in the underlying mail, it appears that both the envelope and header sender addresses here are jtaylor@xxxxxxxxxxxxxx? Isn't that what you wanted? The only place that dedicated.stonecabin.net appears is in the Received: header, which is the right and proper place for it to be because that's the real hostname of the server. What is it that you wanted to be different?
Paul.