Can someone please tell me the major change between Exchange 2007 and Exchange 2010? For example, what is the CAS server and now RPC encryption at the server level? I have a customer who has periodic connection problems with software relying on MAPI and I suspect it has to do with the CAS or RPC at the server. If i wanted to, even for a short time, how could I make Exchange 2010 act like 2007 until my MAPI tool is finished?
I know, big question. Your help will be appreciated.