I am building up a new Exchange 2010 to replace my Exchange 2007 server. I'll migrate over mailboxes after the new server is built. I have 2 initial questions:
1. My Exchange 2007 server contains all elements of Exchange, from Hub Transport to Edge Transport.
a. Can I build up my Exchange 2010 server with Client Access, Hub Transport, Mailbox, Unified Messaging, and Edge Transport as well?
b. Can the 2007 coexist with the 2010 server, each with all the roles installed, while I migrate the mailboxes?
2. My setup file for Exchange 2010 includes SP1. I know that SP3 exists for 2010. Can I go straight to SP3 after initial configuration?
Thanks in advance!
(BTW, I'm working on Server 2008 R2)