I have 100+ users in my EX07 environment. I have one user who has an issue with the Return Path in the headers of his outbound emails and meeting requests. This is causing messages to bounce back to those responding to his meeting requests or emails. The headers have the return path as: bruse@mail.enernex.com. The return path should be: bruce@enernex.com just like every other user in the environment. He is running WinXP SP3 and OL2003 on his PC. Any thoughts as to what may have caused this and how to resolve without affecting the other users within my environment? The message headers are posted below. Thanks in advance. * * * * header begins Return-Path: <bruce@mail.enernex.com> Delivered-To: bmuschli@ptd.net Received: (qmail 10326 invoked from network); 14 Apr 2010 12:35:08 -0000 Received: from smtp24.mailnet.ptd.net ([204.186.204.34]) by maili.mailnet.ptd.net (qmail-ldap-1.03) with QMQP; 14 Apr 2010 12:35:08 -0000 Delivered-To: CLUSTERHOST smtp24.mailnet.ptd.net bmuschli@ptd.net Received: (qmail 15082 invoked by uid 50005); 14 Apr 2010 12:35:08 -0000 Received: from host120.enernex.com by smtp24.mailnet.ptd.net (envelope-from <bruce@mail.enernex.com>, uid 50002) with qmail-scanner-2.08 (clamdscan: 0.95.3/10729. spamassassin: 3.2.5. Clear:RC:0(209.60.163.120):SA:0(0.0/5.0):. Processed in 0.094945 secs); 14 Apr 2010 12:35:08 -0000 X-Spam-Status: No, score=0.0 required=5.0 X-Spam-Level: Received-SPF: pass (smtp24.mailnet.ptd.net: SPF record at mail.enernex.com designates 209.60.163.120 as permitted sender) Received: from host120.enernex.com (HELO exmail.enernex.com) ([209.60.163.120]) (envelope-sender <bruce@mail.enernex.com>) by smtp24.mailnet.ptd.net (qmail-ldap-1.03) with SMTP for <bmuschli@ptd.net>; 14 Apr 2010 12:35:08 -0000 Received: from EXMAIL2.enernex.com ([10.0.200.36]) by exmail.enernex.com with Microsoft SMTPSVC(6.0.3790.4675); Wed, 14 Apr 2010 08:35:06 -0400 Received: from EXMAIL2.enernex.com ([10.0.200.36]) by EXMAIL2.enernex.com ([10.0.200.36]) with mapi; Wed, 14 Apr 2010 08:35:06 -0400 From: Bruce Muschlitz <bruce@enernex.com> To: "bmuschli@ptd.net" <bmuschli@ptd.net> Date: Wed, 14 Apr 2010 08:35:00 -0400 Subject: test Thread-Topic: test Thread-Index: AcrbzuYH+WnQtQvOScW4Lo7lhI7lQQ== Message-ID: <20F09414D2C12F49A460A931E4907FB78DEA3E7E81@EXMAIL2.enernex.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US Content-Type: multipart/alternative; boundary="_000_20F09414D2C12F49A460A931E4907FB78DEA3E7E81EXMAIL2enerne_" MIME-Version: 1.0 Return-Path: bruce@mail.enernex.com X-OriginalArrivalTime: 14 Apr 2010 12:35:06.0703 (UTC) FILETIME=[E9E07DF0:01CADBCE] * * * * header ends

is bruce@mail.enernex.com defined in his user account properties anywhere? Also, is spam assassin or qmail altering headers? I had a similar issue when a user changed last names and it ended up being the x.500 address somehow (it was a weird one). I'll see if i can find it in my notes.http://exchangedeepthoughts.blogspot.com

I went through his user account first. There is no mail.enernex.com entry anywhere within his user account.Spam Assassin and qmail are possibilities, but why just this one user and not the entire organization then?