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Starting from scratch, A new Domain, Migrating Mailboxes, public folders and users to a brand new domain

Posted on 2008-06-10
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Last Modified: 2010-04-21
It is a long story to explain my reasons for doing what I am going to attempt to do so I will just mention what it.  

I have a Server 2003 domain with an exchange 2000 and an exchange 2003 server.
I am going to create a brand new domain and brand new exchange 2007 attached to new domain
I will eventually decommision the old domain (delete it, kill it etc)

What are the processes I need to complete in order to transfer the users, and more importantly the Mailboxes and Public folders.

I have no problem killing the old domain and starting fresh, but i need to transfer the public folders and mailboxes.  I can always just assign the mailboxes to the new users in the new domain, I just can't lose any data!
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Question by:djfirefox
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by:wtstadd
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You can either create a trust between the domains and migrate the mailboxes or you can export the mailboxes and import them.

Migrate will work with the following command:

$target=Get-Credential
$source=Get-Credential

Get-Mailbox -DomainController 'DC NAME GOES HERE' -Credential $source -Identity 'UPN NAME' |move-mailbox -TargetDatabase 'TARGET EXCH DB' -SourceForestGlobalCatalog 'DC NAME GOES HERE' -GlobalCatalog 'GC NAME GOES HERE' -DomainController 'LOCAL DC NAME HERE' -SourceMailboxCleanupOptions none-SourceForestCredential $source -TargetForestCredential $target -Confirm:$false


As far as the public folders are concerned, it is easy to just export then import. You will need to worry about permissions for the folders!
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by:djfirefox
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I'm probably going to sound like a complete numpty but how do you export mailboxes and pub folders from exchange 2000/2003.  Is this done through exchange manager or are we talking about making a local outlook PST file and copying each folder one by one from within outlook!?
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by:djfirefox
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PS: What about migrating the user info ie AD logons etc
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wtstadd earned 500 total points
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Public folders can be exported via Outlook using the File - Import / Export functionality. You can use EXMERGE for Exchange 2003, and in Exchange 2007 you can use the import-mailbox cmdlet (for detailed instructions you can type from the Exchange Shell -    get-help import-mailbox -detailed )

The migration of users can be done from ADMT which can be found at:
http://www.microsoft.com/downloads/details.aspx?FamilyID=6f86937b-533a-466d-a8e8-aff85ad3d212&displaylang=en

Let me know if that helps....
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by:djfirefox
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Thank you, this has worked brilliantly.  I appreciate your help
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