RT2.0 Invalid Return-path for MX records on auto-reply generated mail

Hello,
Does anybody know how to change the default return email address of a
queue?
I have the General queue set to rt@nemsys.com and commencts@nemsys.com

When a user attempts to reply to the autoreply, their locale MX records
deny it due to an invalid return path.

On examining the headers, The Return-path below is incorrect.

We are using RT 2.0 on Redhat 7.1 Our mail exchanger is Microsoft
Exchange 2000 with a auto-forward rule for support@nemsys.com to
apps.nemsys.com.

If anybody has any suggestions on where I can change this Return-path, I
think that might solve my problem.

Thanks in advance,
-Don

Microsoft Mail Internet Headers Version 2.0
Received: from nemsys.com ([192.168.2.1]) by nem.nemsys.com with
Microsoft SMTPSVC(5.0.2195.5329);
Tue, 19 Nov 2002 17:29:24 -0500
X-MessageWall-Score: 0 (nemsys.com)
Received: from [192.168.2.7] by nemsys.com (MessageWall 1.0.7) with
SMTP; 19 Nov 2002 22:29:25 -0000
Received: (from mail@localhost)
by apps.nemsys.com (8.11.2/8.11.2) id gAJNTT601383;
Tue, 19 Nov 2002 18:29:29 -0500Date: Tue, 19 Nov 2002 18:29:29 -0500
Subject: [nemsys.com #75] AutoReply: test
From: “general” support@nemsys.com
Reply-To: support@nemsys.com
In-Reply-To: rt-75@nemsys.com
Message-ID: rt-75-345.19.3610908373702@nemsys.com
Precedence: bulk
X-RT-Loop-Prevention: nemsys.com
RT-Ticket: nemsys.com #75
Managed-by: RT 2.0.14 (http://bestpractical.com/rt/)
RT-Originator: mccallum@nemsys.com
To: mccallum@nemsys.com
Return-Path: mail@apps.nemsys.com
X-OriginalArrivalTime: 19 Nov 2002 22:29:24.0715 (UTC)
FILETIME=[1D2313B0:01C2901B]