Exchange 2010
70-662, MCTS, Technoloy Specialist, TS: Microsoft Exchange Server 2010, Configuring
70-663, MCITP, IT Professional, Pro: Designing and Deploying Messaging Solutions with Microsoft Exchange Server 2010
No upgrade available

Exchange 2007
70-236, MCTS: TS:Exchange Server 2007, Configuring
70-237, MCITP, Pro: Designing Messaging Solutions with Microsoft Exchange Server 2007
70-238, MCITP, Pro: Deploying Messaging Solutions with Microsoft Exchange Server 2007