When setting the event logging level for the oal generation to medium I see the following event: Event Type: Error Event Source: MSExchangeSA Event Category: OAL Generator Event ID: 9331 Date: 5/23/2011 Time: 18:56:52 User: N/A Computer: JUPITER01 Description: OALGen encountered error 8004010f (internal ID 501080c) accessing the public folder store while generating the offline address list for address list '\Global Address List'. - Default OAB Followed immediately by: Event Type: Warning Event Source: MSExchangeSA Event Category: OAL Generator Event ID: 9358 Date: 5/23/2011 Time: 18:56:52 User: N/A Computer: JUPITER01 Description: OALGen could not update the timestamp of the previous version of offline address list '\Global Address List'. Please check earlier event log messages for the specific error. - Default OAB This is a fresh install of Exchange 2007; there was never any older version of Exchange The clients are not reporting any problems downloading the OAB; however, what they download is not up to date All three mailbox servers are reported to have a replica of the default oab This worked for three years until about a month ago. The CAS designated as the distribution point has an lzx file up to April 24. The generating MB server is part of a CCR; the correct node is listed under HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSExchangeSA\Parameters\ClusterName\EnableOabGenOnThisNode The generating MB server is creating new lzx files every time I force an update There are no other errors in the event logs and the only warnings relate to problems with individual entries (bad SMTP address, invalid cert, etc) The one thing I am not sure about is that there are two old lzx files on the generating MB server: they date to 4/24/2011 and then the files jump in date to the most recent. I have checked the items discussed as possible causes of this event in the forums, blogs, and docs I can find.TBrennan

Here you go, i am sure it answers your question. http://blogs.msdn.com/b/dgoldman/archive/2006/10/15/generating-a-newly-created-offline-address-book-fails-with-errors-9331-and-9335.aspx Cheers, Gulab | MCTS-MCITP Messaging: 2010 | MCTS-MCITP Messaging: 2007 | MCC 2011 | Skype: Gulab.Mallah | Blog: www.ExchangeRanger.blogspot.com

I had already read that blog post along with others Goldman has and they do not address my specific problem or provide a solution. The OAB is generated and the OAB files are present. I tried dismounting and remounting the Public Folder store to force maintenance during the initial troubleshooting; but, it had no effect. I turned the diagnostic logging up on the generating server and never see either Event 9335 nor 3043. Even though the error indicates the server generating the OAB can't access the public folder store Outlook 2003 clients who would get their OAB through public folders see the updated GAL; it's the Outlook 2007 clients who should be getting their OAB via the web that don't see anything new.TBrennan