Microsoft KB Archive/325797

= The SMTP service may leak domain list memory when you use the Pickup folder =

Article ID: 325797

Article Last Modified on 10/27/2006

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APPLIES TO


 * Microsoft Windows 2000 Service Pack 1
 * Microsoft Windows 2000 Service Pack 3
 * Microsoft Windows 2000 Service Pack 2
 * Microsoft Windows 2000 Advanced Server
 * Microsoft Windows 2000 Advanced Server
 * Microsoft Windows 2000 Advanced Server

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This article was previously published under Q325797



SYMPTOMS
When you send a lot of mail by using the Pickup folder with the Windows 2000 Simple Mail Transfer Protocol (SMTP) service, memory usage may increase over time without ever decreasing.



CAUSE
Memory is allocated for a domain entry but is never released for each unique domain to which a message is sent.



Service pack information
To resolve this problem, obtain the latest service pack for Microsoft Windows 2000. For more information, click the following article number to view the article in the Microsoft Knowledge Base:

260910 How to obtain the latest Windows 2000 service pack

Hotfix information
To resolve this problem, install hotfix 910932. For more information about hotfix 910932, click the following article number to view the article in the Microsoft Knowledge Base:

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



WORKAROUND
 Start Registry Editor (Regedt32.exe). Locate and then click the following key in the registry:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SMTPSVC\Queuing

 On the Edit menu, click Add Value, and then add the following registry value:

Value name: ZombieDomainEntryThreshold

Data type: DWORD

Value data: 0000003E8

 Quit Registry Editor.



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section. This problem was first corrected in Microsoft Windows 2000 Service Pack 4.

Keywords: kbbug kbqfe kbsysadmin kbenv kbpending kbwin2ksp4fix kbhotfixserver KB325797

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