Re: Changing Domain on Server Configuration
As far as I know renaming a domain with Exchange 2007 installed isn’t supported by Microsoft and there must be a reason for this.
So Exchange 2007 have to be uninstalled bevor renaming the domain, but now it’s to late.
I would bet that trying to remove Exchange 2007 via setup now will get you nowhere and removing an Exchange 2007 organization manually isn’t supported as well.
Your best hope is a good backup of the domain controller(-s) bevor the rename.