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Junk Email settings do not work as expected after you migrate or move a mailbox to an Exchange Server 2010 SP1 Mailbox server

Article ID: 2695011 - View products that this article applies to.

SYMPTOMS

Consider the following scenario:

You configure the Junk Email settings of a mailbox by using Microsoft Outlook 2010 or by using Group Policy. Or, you configure the Junk Email settings on an individual basis.
You migrate or move the mailbox to a Microsoft Exchange Server 2010 Mailbox server that has Exchange Server 2010 Service Pack 1 (SP1) or a later update rollup installed.

In this scenario, the Junk Email settings do not work as expected. For example, you encounter one or more of the following issues:

Some messages are moved to the Junk Email folder in Outlook 2010 incorrectly.
Some messages are not moved to the Junk Email folder as expected.
The Junk Email filter lists in Outlook 2010 and in Outlook Web App are inconsistent.
When you configure new Junk Email settings by using Outlook 2010, the Exchange Server 2010 Mailbox server is not updated with these changes.

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This issue occurs because Exchange Server 2010 SP1 does not generate a change number when you migrate or move a mailbox. Therefore, the PR_CHANGE_KEY property of the Junk Email rules message is missing.

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RESOLUTION

To resolve this issue, install the following update rollup before you move or migrate a mailbox:

2685289

(http://support.microsoft.com/kb/2685289/ )

Description of Update Rollup 3 for Exchange Server 2010 Service Pack 2

Note This update rollup will not resolve this issue if you apply the update after you move or migrate a mailbox.

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STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

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MORE INFORMATION

For more information about the Outlook 2010 Junk Email filter, go to the following Microsoft website:

General information about the Outlook 2010 Junk Email filter

(http://office.microsoft.com/en-us/outlook-help/overview-of-the-junk-email-filter-HP010355048.aspx)

For more information about how to deploy Junk Email settings by using Group Policy, go to the following Microsoft website:

How to deploy Junk Email settings by using Group Policy

(http://support.microsoft.com/kb/2252421)

For more information about the PR_CHANGE_KEY property, go to the following Microsoft website:

General information about the PR_CHANGE_KEY property

(http://msdn.microsoft.com/en-us/library/ee220071(v=EXCHG.80).aspx)

For more information about a similar issue that occurs after you move or migrate a mailbox, click the following article number to view the article in the Microsoft Knowledge Base:

2655142

(http://support.microsoft.com/kb/2655142/ )

Outlook Junk Email settings ignored after moving mailbox to Exchange Server 2010

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