Not visited for a while but I figured this is as good a place as any to start with this question
I work in a Windows 2003 house with Exchange 2003. Our aim over the next few months is to deploy blades, SAN and W2K12/Exch 2K13 in a new Active Directory infrastructure. I'm still trying to work out the best way of migrating user email addresses from the old domain to the new one without losing any internal messaging functionality.
We have a number of email domain and each user may have an address in one or more of these domains. If I create firstname.lastname@example.org on the new Exchange box, I'll lose the ability to send emails to anybody else at domain1.com and they'll no longer be able to email usera unless I do a "big bang" cut-over........or does anybody have any alternate solutions/suggestions
Best Answer sc302 , 18 June 2013 - 15:57
There is a migration wizard that would work for this. It will migrate your entire domain over to a new domain.
There is a lot to read and a lot of testing involved.
Once setup properly and tested properly it will make your migration easy. Or you could just use your existing AD infrastructure and add servers then migrate everyone over.
The guide will cover everything you need to know and do. I have done this a few times with this tool, it takes a while to get it going because of all of the prep and testing you have to do but migration is fast and easy when you have set it up right. Follow the guide and you will be fine.Go to the full post