Microsoft KB Archive/902072

= You cannot send a digitally-signed e-mail attachment by using Outlook Web Access from a computer on which S/MIME is installed =

Article ID: 902072

Article Last Modified on 10/25/2007

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APPLIES TO


 * Microsoft Exchange Server 2003 Standard Edition
 * Microsoft Exchange Server 2003 Enterprise Edition

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Important This article contains information about how to modify the registry. Make sure to back up the registry before you modify it. Make sure that you know how to restore the registry if a problem occurs. For more information about how to back up, restore, and modify the registry, click the following article number to view the article in the Microsoft Knowledge Base:

256986 Description of the Microsoft Windows registry



SYMPTOMS
Consider the following scenario:
 * You run Microsoft Outlook Web Access on a computer on which Secure/MIME (S/MIME) is installed.
 * You use Outlook Web Access to attach a digitally-signed e-mail attachment to an e-mail message that is not digitally signed.

In this scenario, when the message recipient receives the e-mail message, that recipient experiences one of the following symptoms:
 * If the e-mail message was sent without information in the message body, the message is received as an opaque-signed message.
 * If the e-mail message was sent with information in the message body, the message is received without the e-mail attachment.

Therefore, you cannot successfully send a digitally-signed e-mail attachment to a recipient by using Outlook Web Access from a computer on which S/MIME is installed.



Hotfix information
A supported hotfix is now available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next service pack that contains this hotfix.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451

Note If additional issues occur or any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. To create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Prerequisites
Because of file dependencies, you must have Microsoft Exchange Server 2003 Service Pack 2 (SP2) installed to apply this hotfix.

Restart requirement
You do not have to restart the computer after you apply this hotfix.

Hotfix replacement information
This hotfix does not replace any other hotfixes.

File information
The English version of this hotfix has the file attributes (or later) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.

Hotfix installation information
Warning Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by using another method. These problems might require that you reinstall your operating system. Microsoft cannot guarantee that these problems can be solved. Modify the registry at your own risk.After you apply this hotfix, you must create and set a new DWORD value for the following registry subkey:

To do this, follow these steps:  Click Start, click Run, type regedit, and then click OK. Locate and then click the following registry subkey:

 On the Edit menu, point to New, and then click DWORD Value. In the New Value #1 box, type ConvertPKCS7SIGAttachmentToMAPI, and then press ENTER. Right-click ConvertPKCS7SIGAttachmentToMAPI, and then click Modify. In the Edit DWORD Value dialog box, click Decimal. In the Value data box, type 1, and then click OK.</li> Exit Registry Editor.</li></ol>

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STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.

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MORE INFORMATION
For more information, click the following article numbers to view the articles in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

817903 New naming schema for Exchange Server software update packages

Additional query words: XCLN

Keywords: kbqfe kbhotfixserver kbfix kbbug kbexchange2003presp1fix kbpubtypekc KB902072

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