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Microsoft KB Archive/923799

From BetaArchive Wiki

Article ID: 923799

Article Last Modified on 10/25/2007


  • Microsoft Exchange Server 2003 Standard Edition
  • Microsoft Exchange Server 2003 Enterprise Edition


Consider the following scenario:

  • You use a Virus Scanning Application Programming Interface (VSAPI) application on a server that is running Microsoft Exchange Server 2003.
  • You create two mailboxes that have circular auto-forward rules.
  • The VSAPI application cleans a virus-infected message. Then, a virus scan engine scans this message.

In this scenario, the mail store continues to grow. Eventually, the mail store becomes so large that an outage occurs. This prevents all users who are homed on this Exchange server from accessing the server.


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:

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:


Because of file dependencies, this hotfix requires Microsoft Exchange Server 2003 Service Pack 2.

For more information about how to obtain the latest service packs for Exchange Server 2003, 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

When you install this hotfix, the following services will be restarted:

  • The Microsoft Exchange Information Store service
  • The Microsoft Search service
  • The IIS Admin service and all dependent services

Hotfix replacement information

This hotfix does not replace any other hotfix.

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.

File name File version File size Date Time Platform
Exosal.dll 6.5.7651.47 70,144 05-Sep-2006 20:06 x86
Mdbmsg.dll 6.5.7651.47 3,372,544 05-Sep-2006 19:26 x86
Store.exe 6.5.7651.47 5,259,776 05-Sep-2006 20:09 x86


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

Additional query words: CM60917 Content Maintenance 60917

Keywords: kbhotfixserver kbqfe kbfix kbbug kbpubtypekc KB923799