Hi,

All is working perfectly except the SMTP host headers.

I have generated DKIM keys for all hosted domains.
When any domain user sends out an email the headers contain that domains specific DKIM key.
However the smtp hostname reflects the server name and not the senders domain.
I need the headers to reflect the hosted domains name so it matches with the DKIM key sent not the server host name.

EX: Mail sent from support@coopwebhosting.com - A hosted domain name on cssl7.com
     to:  external support@golfcarportal.com

Received: from www.cssl7.com (HELO mail.cssl7.com) ([98.126.30.2])
  by m1pismtp01-019.prod.mesa1.secureserver.net with ESMTP; 10 Mar 2010 10:06:41 -0700
Received: from localhost (cssl7.com [127.0.0.1])
        by mail.cssl7.com (CWHmail) with ESMTP id D7AE95F1BF3
        for <support@golfcarportal.com>; Wed, 10 Mar 2010 09:04:26 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=
        coopwebhosting.com; h=message-id:content-type:mime-version
        :subject:from:to:date:x-mailer:x-virus-scanned; s=dkim; t=1268240666; x=1269104666; bh=blah,blah,blah; b=blah,blah,blah
X-Virus-Scanned: amavisd-new at mail.cssl7.com
Received: from mail.cssl7.com ([127.0.0.1])
        by localhost (www.cssl7.com [127.0.0.1]) (amavisd-new, port 10024)
        with ESMTP id TA5Xw7W9TA8u for <support@golfcarportal.com>;
        Wed, 10 Mar 2010 09:04:26 -0800 (PST)
Received: from  (unknown [XX.XX.XX.XX])
        by mail.cssl7.com (CWHmail) with ESMTPSA id 5AAD65F0562
        for <support@golfcarportal.com>; Wed, 10 Mar 2010 09:04:26 -0800 (PST)
X-Mailer: QUALCOMM Windows Eudora Version 7.1.0.9
Date: Wed, 10 Mar 2010 09:07:04 -0800
To: support@golfcarportal.com
From: support <support@coopwebhosting.com>
Subject: DKIM Testing
Mime-Version: 1.0
Content-Type: multipart/alternative;
        boundary="=====================_135753843==.ALT"
Message-Id: <20100310170426.5AAD65F0562@mail.cssl7.com>
X-Nonspam: None