2 questions here.
We are moving to a new AD forest, but it will have a totally new FQDN. What we need though is for the staff to retain there old email addresses and when they send mail it is from there old ones.
So for example, old email was email@example.com, the new forest will be xyz.com but when the new excahnge is created on the new forest I still want the persons email to be firstname.lastname@example.org. How is this achieved?
Also, the second question, what is the best way to move the mailboxes over. No trust but there will be network communication.