I have a client trying to migrate their Exchange to Office 365. They have everything ready to do, except that when they get to Directory Synchronization they are being prompted from Office 365 that they need a Windows Server 2008 64-bit server installed.
I have two questions:
1) Is this requirement only for the migration itself, or do they need to have a 2008 64-bit server running permanently on a good-forward basis to maintain the Directory Synchronization?
2) Their Exchange server is also Exchange 2003, are there any issues with that?