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Mailbox move goof. Exchange 2003 to Exchange 2010 migration. Need help.

Posted on 2014-03-03
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Last Modified: 2014-03-03
Hello All,
      Here is my problem:
Exchange 2003 to 2010 migration.
Moving mailboxes.
One of the mailboxes completes but with errors. The error was that it could not clean out the source mailbox. This is because the source exchange DB dismounted due to it being too large. (Part of the reason I am doing the migration) Anyway,
I think “no problem” Since the mailbox is full size and showing in the exchange 2010, I will delete it from 2003 manually. I do so. Poof, mailbox gone from both servers. I reconnect via 2003 since there were no options to do so in 2010. The mailbox shows back up on both servers but now it is only the mailbox that sits in 2003 that is showing in both areas. And it is almost empty. I assume during the migration, it almost had it cleaned up. The full sized mailbox that was moved, and was showing up in 2010 before I deleted the user mailbox from 2003 is nowhere to be seen.
To top it all off, the user shows as user now, not as legacy mailbox. But when I look at mailbox properties in 2010 it shows the mailbox is sitting on the old server.
I am in quite a bind.
I have successfully moved about 130 other mailboxes with few issues.
Anyone know how to recover that moved mailbox or where it may have gone? It is not in the disconnected mailbox area.

Thanks.
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Question by:johnpitt
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Adam Brown earned 500 total points
ID: 39901009
You probably need to restore the mailbox to the 2003 server from backup. If the 2010 server's copy is empty, you might be able to mail-disable the user, then attached a restored mailbox to their account in 2003 and re-migrate to 2010, but I can't say that will work. Your best bet would probably be to restore a backup mailbox to a temporary user then export the mailbox to PST with ExMerge and import it to 2010 in the Exchange Shell.
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by:johnpitt
ID: 39901462
OK. I think I got it. The moved mailbox was in fact disconnected. It just took a day to show up. Something about maintenance cycles, blah, blah. So, I just deleted the old 2003 mailbox manually, deleted exchange attributes from user so I could reconnect via the 2010 disconnected mailbox gui and voila', done. I had to use ADSIedit to change an exchange attribute to allow the user to show up as an option to reconnect to though.

Oh, and do not believe anything you see in Exchange 2010 Management Console unless you hit refresh first. One of the most annoying things I have encountered in a while.

Thanks
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Author Closing Comment

by:johnpitt
ID: 39901465
It would have been better if someone pointed out the long delay in disconnected mailboxes showing up. Of course the experts do not know I am completely new to 2010.
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Expert Comment

by:Adam Brown
ID: 39901531
Yeah, the Console doesn't refresh itself very well. Best to check things directly in Powershell if you can.
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