XADM: Malformed Message Causes Access Violation in Information Store

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This article was previously published under Q166026

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SYMPTOMS

The Microsoft Exchange Server versions 4.0 or 5.0 information store may stop responding and you receive a Dr Watson error message. An access violation C0000005 error is logged in the Drwtsn32.log.

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CAUSE

The error occurs because of a malformed message when a POP3 client tries to retrieve the message.

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WORKAROUND

Log on to the mailbox using the Microsoft Exchange or Outlook Client, delete the message that is causing the crash, if possible, and then restart the information store.

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MORE INFORMATION

This is an extract of a message that will cause this problem:

   Content-Type: TEXT/PLAIN; charset=US-ASCII
   sender abcdef@xyz.abc.com )

The second line causes the problem to occur. If you manually remove this line in the message, it processes correctly.

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Microsoft has confirmed this to be a problem in Microsoft Exchange Server version 4.0. This problem has been corrected in the latest U.S. Service Pack for Microsoft Exchange Server version 4.0. For information on obtaining the Service Pack, query on the following word in the Microsoft Knowledge Base (without the spaces):

S E R V P A C K

Microsoft has confirmed this to be a problem in Microsoft Exchange Server version 5.0. This problem has been corrected in the latest U.S. Service Pack for Microsoft Exchange Server version 5.0. For information on obtaining the Service Pack, query on the following word in the Microsoft Knowledge Base (without the spaces):

S E R V P A C K

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APPLIES TO

Microsoft Exchange Server 4.0 Standard Edition
Microsoft Exchange Server 5.0 Standard Edition

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kbhotfixserver kbqfe kbbug kbfix KB166026

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Retired KB Content Disclaimer

This article was written about products for which Microsoft no longer offers support. Therefore, this article is offered "as is" and will no longer be updated.

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