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Offline address book exchange 2000 to exchange 2007

Posted on 2009-04-13
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Last Modified: 2012-05-06
I am migrating from Exchange 2000 to exchange 2007.  I moved the Default offline Address list to the new Exchange server.  As a test I dismounted the public folder store in exchange 2000 to see if I could still download the offline address book from the outlook 2003 client.  I could not.  Is there something else I have to do?
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Question by:networkmgmt
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by:Mestha
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What exactly did you do?
The OAB is held in a public folder. That public folder should be replicated to the Exchange 2007 server if you are not on 100% Outlook 2007. If you have clients on the Exchange 2000 server then you will need to have public folders on the Exchange 2007 server.

Are you following the guide from Microsoft on removing the last legacy Exchange server?

Simon.
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by:networkmgmt
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Yeah I followed those instructions.  The public folder database exists on Exchange 2007 and I migrated the only public folder successfully.  The OAB public folder would not replicate properly and when I took the public store of the legacy server offline, could not download address book from the client.

It looks like I can just generate a new address book on the Exchange 2007 server and then I can make that the default.  That should be fine right?
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by:Mestha
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As long as you have OAB folders in the public folder store of the new server then you should be able to force it to generate, however if the clients are still looking at the old server then something hasn't updated correctly.

Simon.
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by:networkmgmt
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Okay.  So I'm still stuck.

On the legacy Exchange server I see "offline Addres Book-First Administrative Group" Replication status is "local modified", I see offline Address Book-/o=domain name/cn=addrlists....etc "local modified.  For replication I can see both exchange servers listed.

When I go to the Exchange 2k7 server and open the properties of the offline address book, if I click on the e-mail addreses tab or some of the other tabs it says, it contains "invalid data."  The following values have invalid data, "Alias."

When I dismount the Public folder store, I still cannot download the address book from the client.  Do I need to repoint the client to the new public store and if so how do i do that?
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by:Mestha
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The Alias issue shouldn't have caused problems, I have just checked one of mine and it is doing the same thing!

Are both servers still listed as replicas on the Exchange 2000 server?

Simon.
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by:networkmgmt
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They are both listed as replicas on both the Ex2k7 server and Ex2k server.
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by:Mestha
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Do the OAB folders on the Exchange 2007 server actually have any content?

get-publicfolderstatistics | where {$_.name -match "oab"}

Simon.
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by:networkmgmt
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Doesnt really look like it ....  Tell me this, is there any harm in just creating a new address list in Ex2k7, making it the default, then associating the mailbox database with the new address list.  I would love to solve this problem, but the address list isnt very big and I'd rather just recreate if the migration/replication is just not working.  I'm getting rid of the legacy server anyway.  Let me know.

Name                                     ItemCount               LastAccessTime
----                                     ---------               --------------
OAB Version 2                            1                 4/14/2009 5:10:16 AM
OAB Version 3a                           1                 4/14/2009 5:10:16 AM
OAB Version 4                            1                 4/14/2009 5:10:16 AM
/o=WashingtonENT Group/cn=addrlists/cn=o 0                 4/13/2009 8:32:27 PM
abs/cn=Exchange 2k7 Book
/o=WashingtonENT Group/cn=addrlists/cn=o 0                 4/14/2009 6:02:16 AM
abs/cn=Default Offline Address List
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Mestha earned 250 total points
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The numbers should get smaller the higher the version goes.
So OAB Version 2 will be almost the same number as users on the system, whereas OAB version 4 can be up to 4 times less - due to changes in the compression algorithm.

It isn't the Address List that has the problem, but the OAB.
I would suggest that you switch it back to the Exchange 2000 server, wait about 30 minutes then force it to update. Then run the command again about 30 minutes after the update to see if the content is replicating across to the new server.

Simon.
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Author Closing Comment

by:networkmgmt
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The replication is working now and all is well, thanks for the help on this one.
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