Q277911: XADM: Lost Mail During MoveUser Between Two 5.5 Servers

Article: Q277911
Product(s): Microsoft Exchange
Version(s): 5.5
Operating System(s): 
Keyword(s): kbExchange550preSP4fix
Last Modified: 08-MAY-2002

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The information in this article applies to:

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

When you move a user from one Exchange Server 5.5 computer to another by means
of a Microsoft Exchange 2000 server, mail sent during the move may be lost. You
may not receive a non-delivery report (NDR) for the messages that are lost.

CAUSE
=====

The logs indicate that the following steps occur automatically in a MoveUser
operation:

1. A new mailbox for the moved user is created on the destination server.

2. A different thread in the information store delivers a message to the newly
  created mailbox.

3. The administrator tool sets the InTransit flag on the mailbox that was
  created in step 1.

4. All delivery threads deliver mail for this new mailbox in the InTransitFolder
  instead of the actual folder.

5. After the move is finished, the InTransit flag is removed, and the
  InTransitFolder is flushed to the new mailbox.

6. A message arriving at Step 2 is missing, as it is delivered after the mailbox
  is created, but before it is tagged as in transit.


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. This problem was first corrected in Exchange Server 5.5 Service
Pack 4.


Additional query words:

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Keywords          : kbExchange550preSP4fix 
Technology        : kbExchangeSearch kbExchange550 kbZNotKeyword2
Version           : :5.5
Issue type        : kbbug
Solution Type     : kbfix

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