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Microsoft KB Archive/254334

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Knowledge Base

XCON: Message Transfer Agent Stops Responding in EMSMTA!o4puinqh After Dereferencing a Pointer

Article ID: 254334

Article Last Modified on 10/26/2006


  • Microsoft Exchange Server 5.5 Service Pack 3

This article was previously published under Q254334


The Exchange Server message transfer agent (MTA) stops responding in EMSMTA!o4puinqh after it dereferences a pointer.


This issue can occur if the MTA cannot complete the assignment of an index (memory structure) and the MTA attempts to use the index. The MTA dereferences a pointer that is not valid.


To resolve this problem, obtain the latest service pack for Exchange Server 5.5. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

191014 XGEN: How to Obtain the latest Exchange Server 5.5 Service Pack


Microsoft has confirmed that this is a problem in Microsoft Exchange Server version 5.5 SP 3. This problem was first corrected in Exchange Server 5.5 Service Pack 4.

Keywords: kbbug kbexchange550presp4fix kbexchange550sp4fix kbfix kbqfe KB254334