I have an AIX server that is in my domain that I allow to relay through my Exchange 2003 server. All is fine except when I look at the headers, the return path is different that the "From" address. I have looked at the CFG file on the AIX server and all is in order there. Below is a sample of the header file:
Microsoft Mail Internet Headers Version 2.0
Received: from cpfcp615.mdvnf.com ([184.108.40.206]) by exch1.mdvcorp.mdvnf.com with Microsoft SMTPSVC(6.0.3790.3959);
Wed, 5 Dec 2007 09:59:07 -0500
Received: (from root@localhost) by cpfcp615.mdvnf.com (AIX5.2/8.11.6p2/8.11.0) id lB5Exwl13972 for email@example.com; Wed, 5 Dec 2007 09:59:58 -0500
Date: Wed, 5 Dec 2007 09:59:58 -0500
X-OriginalArrivalTime: 05 Dec 2007 14:59:07.0410 (UTC) FILETIME=[6278FF20:01C8374F]
Thoughts on how this is occurring or how to fix?