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Mailbox has red X next to it after migration

I have "Completed" my 5.5 Exchange 2003 migration.  All mail migrated and 5.5 server is decomissioned but I have one mailbox that shows up in system manager with a red X next to it.  I checked the ADUC account and it did not have a mailbox assigned so I created one.  Of course, this created a new one and didn't attach to the old one which still shows up with a red X.  I can see in system manager that there are still obects in the mailbox (about 1009).  Is there any way to connect this AD user with this existing mailbox?  Thanks
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CQGUY
Asked:
CQGUY
1 Solution
 
BNettles73Commented:

Go into system manager > navigate to the server > navigate to mailboxes > right click on mailboxes and run the cleanup agent > navigate to the mailbox with a red "x" and right click on the object > select "reconnect" and then select the AD account to associate with the mailbox

Keep in mind that exchange 2003 is different than exchange 5.5 ... you can only have a 1:1 ratio of mailbox to account ... meaning if an account already has a mailbox , then you will need a different account and then assign mailbox permissions within ADUC for other users ..

If it is a resource mailbox it may have become disassociated because you didn't run NTDSNoMatch ...

For more info on what I'm talking about ... read this article (http://support.microsoft.com/default.aspx?kbid=274173), XADM: Documentation for the NTDSNoMatch Utility
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