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Messages in the deferred delivery queue cause performance problems on an Exchange 2000 or Exchange 2003 computer
Article ID: 838644 - View products that this article applies to.
Computers that are running Microsoft Exchange 2000 Server or Microsoft Exchange Server 2003 may experience high CPU utilization when the deferred delivery queue is full of deferred messages.
This problem may occur when the following conditions are true:
When many messages are sent to users who are no longer mailbox-enabled, the messages are deferred every half hour and can accumulate in large numbers. The messages are constantly cycled through the information store and back to the deferred delivery queue.
The following conditions can cause messages to accumulate in the deferred delivery queue:
Exchange Server 2003
Service pack informationTo resolve this problem, obtain the latest service pack for Microsoft Exchange Server 2003. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/836993/ )How to obtain the latest service packs for Exchange Server 2003
Hotfix informationTo resolve this problem, obtain the August 2004 Exchange 2000 Server Post-Service Pack 3 update rollup.
Exchange 2000 ServerFor additional information, click the following article number to view the article in the Microsoft Knowledge Base:
870540Component: TRANSPORT CORE
(http://support.microsoft.com/kb/870540/ )Availability of the August 2004 Exchange 2000 Server Post-Service Pack 3 update rollup
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.
Note Because of file dependencies, this hotfix requires Microsoft Exchange 2000 Server Service Pack 3 (SP3). For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
Date Time Version Size File name ---------------------------------------------------- 30-Apr-2004 17:24 6.0.6589.0 507,904 Phatq.dll
(http://support.microsoft.com/kb/301378/ )How to obtain the latest Exchange 2000 Server service pack
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 Microsoft Exchange Server 2003 Service Pack 2.
Article ID: 838644 - Last Review: October 25, 2007 - Revision: 3.3