Q274200: XADM: Duplicated Message Received with Store Post-SP3 Hotfix

Article: Q274200
Product(s): Microsoft Exchange
Version(s): 5.5 SP3
Operating System(s): 
Keyword(s): exc55sp3 kbExchange550preSP4fix kbExchange550sp4Fix
Last Modified: 08-MAY-2002

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The information in this article applies to:

- Microsoft Exchange Server, version 5.5 SP3 
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SYMPTOMS
========

After you install any post-Exchange Server 5.5 Service Pack 3 (SP3) information
store hotfix (between build 5.5.2652.68 and 5.5.2653.16), you may receive
duplicate messages when the message was originally sent to you or to a
distribution list that includes your mailbox.

CAUSE
=====

Any information store fix after build 5.5.2652.68 has been changed to use the
Internet ID globally unique identifier (GUID) instead of the Instance ID to
track message duplication. The local delivery pointer is not initialized
correctly after the modification.

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:

  Q191014 XGEN: How to Obtain the Latest Exchange Server 5.5 Service Pack



STATUS
======

Microsoft has confirmed this to be a problem in Microsoft Exchange Server
version 5.5 SP3. This problem was first corrected in Exchange Server 5.5 Service
Pack 4.

Additional query words: IS

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Keywords          : exc55sp3 kbExchange550preSP4fix kbExchange550sp4Fix 
Technology        : kbExchangeSearch kbZNotKeyword2 kbExchange550SP3
Version           : :5.5 SP3
Issue type        : kbbug
Solution Type     : kbfix

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