Moving Exchange 2003 to Exchange 2010 on a new domain what is the best way to move the mailboxes?

Posted on 2012-09-10
Last Modified: 2012-09-10
We are moving a domain with 75 users to completely new domain as they have active directory corruption.  The old domain has an exchange 2003 server and the new domain will be running on exchange 2010.  Becasue we are not moving mailboxes from one server to another, but rather from one domain to another what would be the best way to move these mailboxes.  

Exmerge is not an option due to it 2 gig limitation.
Question by:ccarmichael7
    LVL 41

    Expert Comment

    User count is very low, I would suggest use Outlook to create PST. Outlook 2010 supports 50GB PST now. If you have large mailboxes, break down mailbox into small PST, i would say 2GB Max.

    Then merge that data to users mailbox in new site or server.

    Author Comment

    IS there an automated way to remerge the data back into the new exchange 2010 server?  Similar to how exmerge used to work?  or will we need to merge back in using outlook?
    LVL 41

    Accepted Solution

    Outlook is the best method, there are other options, but those are complicated and expensive. If it is a large env, i might recommended other options, as you already mentioned AD is not working properly, it waste in giving you complex solution.

    Author Closing Comment

    Ok thank you!

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