DOCUMENT:Q263457  01-JUN-2001  [exchange]
TITLE   :XADM: Information Store Access Violation w. Long One-Off Addr.
PRODUCT :Microsoft Exchange
PROD/VER:winnt:5.5
OPER/SYS:
KEYWORDS:exc55 kbExchange550preSP4fix kbExchange550sp4Fix kbgraphxlinkcritical

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The information in this article applies to:

 - Microsoft Exchange Server, version 5.5 
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SYMPTOMS
========

During normal operation, the Exchange Server information store service may cause
an access violation (Dr. Watson) when the information store attempts to process
an outbound message that contains a X.400 address that is greater than 1,024
characters. The Drwatson.log file may contain a call stack similar to the
following if symbols are properly installed:

   

   ChildEBP RetAddr  
   0112fa04 004c003d store!EcORNameFromSzX400+0x341
   0112fa6c 004c003d store!EcMDBEFFromPtag+0xc7 
   0112fad4 004c003d store!EcMDBEFFromPtag+0xc7
   0112fb3c 004c003d store!EcMDBEFFromPtag+0xc7
   0112fba4 004c003d store!EcMDBEFFromPtag+0xc7
   0112fc0c 004c003d store!EcMDBEFFromPtag+0xc7
   0112fc74 004c003d store!EcMDBEFFromPtag+0xc7
   0112fcdc 004c003d store!EcMDBEFFromPtag+0xc7
   0112fd44 004c003d store!EcMDBEFFromPtag+0xc7
   0112fdac 004c003d store!EcMDBEFFromPtag+0xc7
   0112fe14 004c003d store!EcMDBEFFromPtag+0xc7
   0112fe7c 004c003d store!EcMDBEFFromPtag+0xc7
   0112fee4 004c003d store!EcMDBEFFromPtag+0xc7
   0112ffb4 004c003d store!EcMDBEFFromPtag+0xc7

CAUSE
=====

This issue can occur because no check is made to determine whether an X.400
address is longer than 1,024 characters. When an X.400 address is longer than
1,024 characters, stack corruption occurs and causes the access violation.

RESOLUTION
==========

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

   Q191914 XGEN: How to Obtain the Latest Exchange Server 5.5 Service Pack


The following files are available for download from the Microsoft Download
Center:

   x86: DownloadDownload Q248838engi.exe now
   (http://www.microsoft.com/downloads/release.asp?ReleaseID=25443)
   Alpha: DownloadDownload Q248838enga.exe now
   (http://www.microsoft.com/downloads/release.asp?ReleaseID=25444)

For additional information about how to download Microsoft Support files, click
the article number below to view the article in the Microsoft Knowledge Base:

   Q119591 How to Obtain Microsoft Support Files from Online Services

Microsoft used the most current virus detection software available on the date of
posting to scan this file for viruses. Once posted, the file is housed on secure
servers that prevent any unauthorized changes to the file.


STATUS
======

Microsoft has confirmed this to be a problem in Microsoft Exchange Server
version 5.5. This problem was first corrected in Exchange Server 5.5 Service
Pack 4.

Additional query words:

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Keywords          : exc55 kbExchange550preSP4fix kbExchange550sp4Fix kbgraphxlinkcritical 
Technology        : kbExchangeSearch kbExchange550 kbZNotKeyword2
Version           : winnt:5.5
Issue type        : kbbug
Solution Type     : kbfix

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