We are migrating to a new Server 2003 domain with and going from Exchange 2000 Exchange 2003 on a new box. I know that BES has the ability to service multiple domains as long as they are part of the same 'Exchange Organization' in the same forest.
I am not Exchange savvy. What exactly constitutes as an Exchange Organization? We are planning a controlled migration by keeping two domains running for a couple months. In this process, everyone's email addresses will change (they decided to go with a new naming convention
). Everyone will have 2 different email addresses during this time. (1 old domain, 1 new domain)
So the whole process will(?) go:
1. DomainA email will host email for both domains by sharing the same SMTP space.
2. Then DomainB will host email for both domains as we switch users
3. Then we turn off DomainA when we're satisfied the new email names have spread.
So I will have two domains with two Exchange servers. Would those be two different Exchange Organizations?
If not, the only other way for users to have two email addresses is to set up contacts in both domains to redirect. Would this be better?
Looking for any advice!