Windows Server 2003 may stop responding when you enable the “Sender ID Filtering” setting on an SMTP virtual server in Exchange Server 2003 SP2

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For a Microsoft Windows 2000 Server version of this article, see 909426 (http://support.microsoft.com/kb/909426/ ) .

SYMPTOMS

Microsoft Windows Server 2003 may stop responding when you enable the Sender ID Filtering setting on a Simple Mail Transfer Protocol (SMTP) virtual server in Microsoft Exchange Server 2003 Service Pack 2 (SP2).

Note You can enable the Sender ID Filtering setting in the Global Settings folder in Exchange System Manager on the individual SMTP virtual server.

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CAUSE

This problem occurs because of a race condition that is caused by the SMTP protocol.

Note A race condition occurs when a device or a system tries to perform two or more operations at the same time. Because of the nature of the device or system, the operations must be performed in the correct sequence in order to be completed correctly.

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RESOLUTION

Service pack information

To resolve this problem, obtain the latest service pack for Windows Server 2003. For more information, click the following article number to view the article in the Microsoft Knowledge Base:

889100 (http://support.microsoft.com/kb/889100/ ) How to obtain the latest service pack for Windows Server 2003

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Hotfix information

A supported hotfix is 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 software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if 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. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site:

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

Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Prerequisites

No prerequisites are required.

Restart requirement

You must restart the computer after you apply the 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 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 tool in Control Panel.

Windows Server 2003, 64-bit x64-based versions

   Date         Time   Version           Size  File name
   --------------------------------------------------------
   02-Aug-2005  08:40  6.0.3790.2499  668,672  Smtpsvc.dll
   02-Aug-2005  08:40  5.2.3790.2499   43,008  Arpidfix.exe

Windows Server 2003, 64-bit Itanium-based versions

   Date         Time   Version             Size  File name     Platform
   --------------------------------------------------------------------
   01-Aug-2005  16:07  6.0.3790.2499  1,265,664  Smtpsvc.dll   IA-64
   01-Aug-2005  16:07  5.2.3790.2499     74,752  Arpidfix.exe  IA-64

Windows Server 2003, 32-bit x86-based versions

   Date         Time   Version           Size  File name
   --------------------------------------------------------
   02-Aug-2005  04:03  6.0.3790.2499  483,328  Smtpsvc.dll
   02-Aug-2005  01:23  5.2.3790.2499   32,256  Arpidfix.exe

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STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section. This problem was first corrected in Windows Server 2003 Service Pack 2.

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