One of our customers needs to unify 2 domains to be 1 domain.
Exchange 2007 sp3
1 external domain xyz.com
1 local domain abc.com
Both are pointing to same exchange server.
Our customer need to delete and stop the internal domain completely and keep the external domain.
my question is : what is the prototype procedures and best practices to do so.
Any documents for step by step guide?
what the expected downtime?
How to change the contact list where to force user to use external domain instead of local domain?