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August 29, 2008 07:03pm pdt
 
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Transition from Single Forest to Cross Forest

Tags: Microsoft, Exchange, 2007, Transition
HI,

I have a single label 2000 domain with Exchange 2000. User accounts exist here and these accounts have mailboxes in Exchange. All users and computers accounts (accounts people log onto their PCs with) are in an NT domain.

We want everything in one domain with Exchange 2007. At the minute users login to the NT domain and then access their email on the 2000 domain and must enter a user name and password each time to open their mailbox.

What I have done so far:
I have built a 2003 domain in a new forest and installed Exchange 2007 SP1 on its own server.
Setup trusts and migrated all users and computers from the NT domain to the 2003 domain. Works fine.
Upgraded the 2000 single label domain to 2003 so we can migrate mailboxes.

This is where I am stuck. I have read this article http://technet.microsoft.com/en-us/library/aa996926(EXCHG.80).aspx

but have questions if anyone can help?

Since all users now exist in the 2003 domain and have SIDs there, how will I handle moving mailboxes for the users? The users in the 2003 domain do not have mailboxes and I wish to link their 2000 mailbox to their 2003 account in AD.

Does anyone know of articles out there on this? In NT Exchange migrations you had the AD cleanup wizard to sort out duplicate accounts

Any help would be great

Thanks.

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Question Stats
Zone: Software
Question Asked By: davewex
Solution Provided By: rehanahmeds
Participating Experts: 1
Solution Grade: B
Views: 0
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