Sharing a domain between two Exchange orgs

posted by  jhorra (5)  8 months ago (blogs.technet.com)

Luke asks:

I am in the process of migrating from Exchange 5.5 to Exchange 2003 for a company that has multiple small (less than 5 users) branch offices. They want to migrate slowly, so here's my dilemma: The current Exchange 5.5 will still be active for a while. I'm using the Exchange Migration Wizard in Exchange 2003 to migrate the mailbox data over. All incoming mail needs to be split between the two servers, as the new Exchange 2003 server