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Migrating mail from exchange 2003 to Exchange 2007

Posted on 2007-11-14
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I have one exchange 2003 server that is in its own  forest.  I have to create a new forest and install Exchange 2007 in it.  What is the most efficient way to move all the mail boxes from the 2003 Exchange server to the Exchange 2007 server?  I will have to move about 100 mailboxes.
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Question by:adsnetcurve
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mass2612 earned 2000 total points
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Hi,

If you want to perform a cross forest migration you need to use the Powershell move-mailbox command (the GUI can't do it). You will also need to have a cross forest trust and permissions in both the source and target Exchange organisations.

Exchange 2007 Cross Org Mailbox Migration
http://msexchangeteam.com/archive/2006/11/02/430289.aspx

Exchange 2007 migration overview
http://msexchangeteam.com/archive/2006/10/27/429522.aspx

How to Move a Mailbox Across Forests
http://technet.microsoft.com/en-us/library/aa997145.aspx
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by:adsnetcurve
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All I want to do in migrate the email.  I will not be migrating any users from one forest to the other.  The tool above seems to want to do both.
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