what is the microsoft exchange server for outlook 2003

I didn't have to do it last two migrations. If needed, Suppress Link State Updates on Exchange 2003.If it's in mixed mode, change it to 'Native Mode'. Open the Exchange 2003 System Manager and right click on the Organization, make sure under Operation Mode is at 'Native Mode'.To raise the Forest Level, right click on Active Directory Domain and Trust and choose Raise Forest Functionality Level. To raise the Domain level, right-click on the domain and choose Raise Domain Functionality Level. Go to Active Directory Domain and Trust and right-click on the Forest and choose Properties and check the Domain Functionality Level and Forest Functionality Level.

Make sure Windows Domain and Forest levels are at Windows 2003 level (you can't have Windows 2000 domain controllers on the network!).Make sure Internet Protocol IP 6 is enabled/checked in the Properties of the Exchange 2010 Network Adapter.Join the new Windows 2008 server R2 that will run Exchange 2010 server to the Windows Domain and make sure you are logged in as Domain Admin to complete the move process.I would connect them directly to the switch since you might have old cat5 cabling in the walls.

Prepare: connect the two Exchange servers to the same Gigabit switch to speed up the mailbox move.

Prepare: Ask users to clean up their mailboxes, empty deleted items ahead of time so you can cut down on mailbox move time.

Microsoft Exchange Server 2003 To 2010 Requirements and Migration - Exchange 2010 on Windows Server 2008 R2:

What is the microsoft exchange server for outlook 2003