Exchange 2010 Offline Address Book Issue

Created new Distribution List and hid one user from the GAL.  Forced an update of the OAB so that I wouldn't have to wait the requisite up-to-24 hrs for it to update automatically.  The user was still seen in the GAL and the Distribution List was only seen in All Groups, not the GAL when a user would do a look-up in Outlook for sending email.  I tested by taking on of the users' Outlook out of cached mode, and then the GAL appeared correctly with the updates.  I deleted the .OAB folders and the .OST file in one user's profile to see if that would clean it up permanently. That did clean it up only until the next automatic update of the OAB from the server which messed it up again.  How do I resolve this permanently from the server as it is clear the server cache is messed up.
071171Asked:
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Will SzymkowskiSenior Solution ArchitectCommented:
Does this happen with all of your Outlook cached mode users? When you go into your EMC Server Config>Mailbox>Mailbox Properties>Client Settings do you in fact have a OAB server listed for all of your mailboxes?

If this is only happening for specific users see if they are all on the same mailbox database as the above might be the issue.

Another thing you can do is turn on the diagnostic logging level for OAL.  Using the below syntax...
Set-EventLogLevel "servername\MSExchangeSA\OAL Generator" -Level High

You can set the logging level back to low with the below command if you happen to find your answer in the logs after turn them to high.
Set-EventLogLevel "SERVER1\MSExchangeSA\OAL Generator" -Level Lowest

If after the above does not work for you, you could try recreating the OAB. See the link below for details...
http://technet.microsoft.com/en-us/library/bb123595(v=exchg.141).aspx

Will.

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071171Author Commented:
This happens for all the users.
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