Memory usage may increase over time when a computer that is running Windows Server 2003 uses the SMTP service to process many outgoing messages (910932)

RESOLUTION

Hotfix Information

A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Windows Server 2003 service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

Prerequisites

You must install Microsoft Windows Server 2003 Service Pack 1 (SP1) before you apply the hotfix.

Note X64-based versions of Windows Server 2003 do not require Windows Server 2003 SP1. For more information, click the following article number to view the article in the Microsoft Knowledge Base:

Restart Requirement

If the SMTP service is running when you apply the hotfix, 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) 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. Microsoft Windows Server 2003, x64-based versions

File name	File version	File size	Date	Time	Platform
Aqueue.dll	6.0.3790.2619	773,632	16-Jan-2006	14:40	x64

Microsoft Windows Server 2003, Enterprise Edition for Itanium-based Systems

File name	File version	File size	Date	Time	Platform
Aqueue.dll	6.0.3790.2619	1,485,312	16-Jan-2006	14:40	IA-64

Microsoft Windows Server 2003, 32-bit versions

File name	File version	File size	Date	Time	Platform
Aqueue.dll	6.0.3790.2619	501,760	17-Jan-2006	03:51	x86

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 the hotfix, you must enable the following registry entry to resolve the problem. To do this, follow these steps:

1. Start Registry Editor.
2. Locate and then click to select the following registry key:

   HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SMTPSVC\Queuing

3. On the Edit menu, click Add Value, and then add the following registry value:
   
   Value name: ZombieDomainEntryThreshold
   Data type: DWORD
   Value data: 0000003E8
4. Exit Registry Editor.