New exchange server on new domain - how do I do it?
We currently run Exchange 2003 on a .local domain with a .org email domain.
We have a Classlink network which I will be getting rid of over the summer, rebuilding a Vanilla domain with 2008 R2 servers and Exchange 2010. The .local domain will be the same name though.
I have some experiance with Exchange, but have never done a migration, add to that this seems to be an unusual one in that not only are we upgrading, it will be a new domain with new users etc, but the same email domain.
My questions are:
1) How do I deal with incoming mail while the change is taking place? Since both servers will probably be offline for a day or so, how do I stop mail getting bounced back?
2) If I export the current mailboxes (to PST's?), then recreate users and email addresses on the new domain, will it be a fairly easy process attaching those mailboxes back to their accounts? Or will they need to manually copy mail from the .pst into their new mailbox? What about contacts?
3) Is there anything else I need to look out for??
I am reading as much as I can on both 2003 and 2010 and have got a virtual network that I will try the migration with first, but just thought some people might have some tips?