Microsoft KB Archive/916896

= A hotfix is available to change the way in which Exchange Server 2003 names an .eml attachment when you use S/MIME in Outlook Web Access =

Article ID: 916896

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



INTRODUCTION
This article describes a hotfix that you can apply to change the way in which Microsoft Exchange Server 2003 names an .eml e-mail attachment in Microsoft Outlook Web Access.



MORE INFORMATION
When you use Outlook Web Access to send or to receive e-mail messages, you can install S/MIME to enhance e-mail security. If you send a message that has an .eml attachment, the display name that Exchange creates for the attachment depends on whether the S/MIME control is installed on the client computer. In this situation, the following behavior occurs:
 * If S/MIME is installed, Exchange parses the RFC 822 message and uses the message subject as the .eml attachment name.
 * If S/MIME is not installed, Exchange uses the attachment file name as the .eml attachment name.

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 Exchange Server 2003 Service Pack 2 (SP2) installed to apply this hotfix. For more information, click the following article number to view the article in the Microsoft Knowledge Base:

836993 How to obtain the latest service packs for Exchange Server 2003

Restart requirement
You do not have to restart the computer after you apply this hotfix. However, the following services are automatically stopped and then restarted when you apply this hotfix:
 * The Microsoft Exchange Information Store service
 * The IIS Admin service
 * The Microsoft Search service
 * All other services that depend on these services

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 file attributes) 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 item 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.

By default, the behavior of Exchange does not change after you install this hotfix. To change the way in which Exchange names an .eml attachment when you use S/MIME in Outlook Web Access, you must configure both the following registry entries.  To enable the S/MIME control part of this hotfix, set the following registry entry:

Value name: SecurityFlags

Value type: REG_DWORD

Value data: 0x800

When you set bit 12 (0x800) of the SecurityFlags registry entry to 1, Exchange ignores the subject in RFC 822 e-mail attachments. To enable the information store part of this hotfix, set the following registry entry:

Value name: DoNotPromoteEmbeddedMessageSubject

Value type: REG_DWORD

Value data:

When you set this registry entry to a non-zero value, Exchange uses the attachment's file name as the attachment display name.

Important After you configure these registry entries, you must restart both the following services for the registry change to take effect:
 * The Microsoft Exchange Information Store service
 * The IIS Admin service



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



MORE INFORMATION
For more information about the terminology that Microsoft uses for software that is corrected after it is released, click the following article number to view the article in the Microsoft Knowledge Base:

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

For more information, click the following article number to view the article in the Microsoft Knowledge Base:

817903 New naming schema for Exchange Server software update packages

Additional query words: XCLN

Keywords: kbhotfixserver kbqfe kbfix kbbug kbpubtypekc KB916896

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