Transferring a corrupt Exchange email account to new account / mailbox

Hi,
I have a user who we are having issues synchronising his enterprise blackberry. I have gone through various trouble shooting with o2/ blackberry support and it points to a corrupted mailbox.
This particular user has quite a large mailbox at about 6GB. All other users in the network have no problems with their blackberries.

Therefore I want to know what the best way in exchange of migrating a users account to a new one. Therefore I will set up a new user in active directory, and I want all email address for this user to be delivered to that account (he has various aliases on different domains).

Is the best thing to do is just export all his email to a PST file and then re-import this into the new account? Then how would I reassign the email addresses to the new account?

This actual user users a Mac, so I don't have to worry too much about the actual settings on the desktop because all they actually use is the email (via entourage).

Any help appreciated.
afflik1923Asked:
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basbasbasCommented:
You can use Exmerge to extract the mail on the server and later on use Exmerge to import the mail to the newly created user.

See http://www.microsoft.com/downloads/details.aspx?familyid=429163ec-dcdf-47dc-96da-1c12d67327d5&displaylang=en for the Exmerge program.

About reassiginign the emailaddress; just remove the address from the old user and add it to the new account.

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afflik1923Author Commented:
Is Exmerge much better then exporting and reimporting the PST - As I am familar wiht this method and under time presure I was hoping it would be the best, but does exmerge give many more benefits?

Is there a downside to the PST method? (I can log into his account on a PC)
basbasbasCommented:
Exmerge runs on the server and therefore is much faster then exporting on the client! But both methods end up in an .PST-file wich you need to import via Exmerge or locally on a client. Except for speed there no real difference i you need to export/import just one mailbox.
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Dave MessmanIT ConsultantCommented:
Agreed - you can export to PST (on a PST) or use Exmerge.  Then delete the user/mailbox.  Immediately recreate the user/mailbox and import all the data.  Exmerge exports to a PST so it's really the same thing.  Exmerge might be easier becuase you don't need to use an actual PC to export to PST and you can more easily do it remotely and/or late at night.
Mahmoud SabrySenior IT Systems EngineerCommented:
did this case like your case

http://www.experts-exchange.com/Software/Server_Software/Email_Servers/Exchange/Q_25966178.html?cid=1131#a31270091

if yes , do it, then go to the new user properties, in email addresses tab and add to him all the aliases that u need
afflik1923Author Commented:
Thanks. All good input on this matter. Very useful in helping me expand my knowledge of mailboxes in Exchange.

Many Thanks
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