We have a Server 2008 R2 box running Exchange 2007. we are also using a Mail foundry Spam filter. We have a few users that receive NDR's when trying to forward from their sent box.
Any help as to why this is happening would be great.
The NDR is as follows:
An error occurred while trying to deliver this message to the recipient's e-mail address. Microsoft Exchange will not try to redeliver this message for you. Please try resending this message, or provide the following diagnostic text to your system administrator.
The following organization rejected your message: mx.ccgtech.net.
Sent by Microsoft Exchange Server 2007
Diagnostic information for administrators:
Generating server: (removed for security)
mx.ccgtech.net #554 Message failed ##
Original message headers:
Received: from (Removed for security) ([fe80::2ce8:8a72:18b1:3178]) by
Server Name here ([fe80::5f9:962c:956c:519%18]) with mapi; Thu, 2 Sep 2010
Date: Thu, 2 Sep 2010 08:40:12 -0700
Subject: PO#9926391 SIG HOL SET
Thread-Topic: PO#9926391 SIG HOL SET