We have 2 sites each running SBS 2011 with exchange setup. Each site receives email separate from the other via its SBS Exchange by use of the POP Connector. (Same email domain name for each site, the pop connector just downloads the mail from the GoDaddy inboxes)
I have been tasked with the follwing:
1. Eliminate the SBS 2011 exchange servers and setting up a single 2013 Exchange server at the main site.
2. Migrating the SBS 2011 Server to Server 2012 R2 at each site.
3. Bring the domains under a single forest.
Both sites are running SBS installations with Roaming Profiles, Folder Redirection and Exchange. (Sharepoint services is disabled at both sites.)
What is going to be the best way to migrate the Exchange portion of each SBS 2011 server to Exchange 2013, then plan for migrating the SBS domains to Server 2012 R2 under a single forest.