5.6.1 smtp;554 5.6.1 "Body type not supported by Remote Host" when sending from Exchage 2010

We have a mixed envirnment with Exchange 2010 and 2003.  When a user sends a specific (auto-forwarded message) from an Exchange 2010 mbx server in one of our remote office to an outside address the message bounces at our 2003 bridgehead server. An internal users is also copied on this message and he gets it no problem.

If I just open the message and forward it the message goes through no problem.  Below is the NDR that the sender receives.

Delivery has failed to these recipients or groups:

recipient@externaldomain.com
The e-mail system had a problem processing this message. Exchange won't try to deliver this message again.





Diagnostic information for administrators:

Generating server: 2003bridgehead.domain.COM

recipient@externaldomain.com
#< #5.6.1 smtp;554 5.6.1 Body type not supported by Remote Host> #SMTP#

Original message headers:

Received: from EXCHANGE2010.domain.com ([10.1.1.53]) by 2003bridgehead.domain.COM
 with Microsoft SMTPSVC(6.0.3790.4675); Fri, 6 Jan 2012 01:39:27 -0500
Received: from users2010MBX.HDP.com (10.6.1.44) by EXCHANGE2010.domain.com (10.1.1.53) with Microsoft SMTP Server (TLS) id 14.1.289.8; Fri, 6 Jan 2012
 01:39:27 -0500
Received: from users2010MBX.HDP.com  ([fe80::940e:f6b5:c876:f2af%13]) by  users2010MBX.HDP.com  ([fe80::940e:f6b5:c876:f2af%13]) with Microsoft SMTP Server  id 14.01.0355.002; Fri, 6 Jan 2012 01:39:26 -0500
Content-Transfer-Encoding: binary
From: "InternalSender" <user@domain.com>
To: "internalrecipiant" <user2@domain.com>, <recipient@externaldomain.com>
Subject: FW: [Patent] Patently-O updates
Thread-Topic: [Patent] Patently-O updates
Thread-Index: AQHMzD3vS9vJrbFqGkKBxpIunIUEZw==
References: <MAIL01hpKVUXu6okEiJ00008c10@mail01.feedblitz.com>
In-Reply-To: <MAIL01hpKVUXu6okEiJ00008c10@mail01.feedblitz.com>
X-MS-Has-Attach: yes
X-MS-Exchange-Inbox-Rules-Loop:
X-MS-TNEF-Correlator: 2f66cb22-7191-48b1-a049-ea63d7a05cf2
MIME-Version: 1.0
Date: Fri, 6 Jan 2012 01:39:26 -0500
Message-ID: <450da630a52c4286b097fd934b41ab12@DC-MBX1.HDP.com>
X-MimeOLE: Produced By Microsoft Exchange V6.5
Content-Type: multipart/mixed;
      boundary="----=_NextPart_000_9587_01CCCC3D.EFFD2D84"
Return-Path: <user@domain.com>
X-OriginalArrivalTime: 06 Jan 2012 06:39:27.0769 (UTC) FILETIME=[EFF39090:01CCCC3D]