Article ID: 977953 - Last Review: January 4, 2010 - Revision: 1.0

In Exchange Server 2010 you cannot forward a signed S/MIME message by using forwarding rules in Exchange Control Panel

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SYMPTOMS

In an Exchange Server 2010 environment, you cannot forward a signed S/MIME message by using forwarding rules in Outlook Web App through Exchange Control Panel (ECP). Additionally, when you try to forward a signed S/MIME message, you receive the following non-delivery report (NDR):

Error Message:
------------------

Delivery has failed to these recipients or groups:
 
<john@contoso.com>
The e-mail system had a problem processing this message. Exchange will not try to redeliver this message for you. 
 
Diagnostic information for administrators:
 
Generating server: server.contoso.com<john@contoso.com>
#550 5.6.0 M2MCVT.StorageError; storage error in content conversion ##

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RESOLUTION

This hotfix is scheduled to be included in Exchange Server 2010 Service Pack 1 (SP1).

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MORE INFORMATION

In Exchange Server 2010 you can forward a signed S/MIME message in Microsoft Office Outlook or in Outlook Web App by using one of the following methods:

Forward a signed S/MIME message by using forwarding rules through ECP.
Forward a signed S/MIME message as usual.
Forward a signed S/MIME message as an attachment.

Currently, only the third method works. Therefore, we recommend that you forward a signed S/MIME message as an attachment in Microsoft Office Outlook or in Outlook Web App.

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