Implementing Exchange Server 2007 for Coexistence With Exchange Server 2003

This paper explains the key differences between Exchange Server 2003 and Exchange Server 2007. It is possible to install Exchange Server 2007 into an existing Exchange Server 2003 organization that is operating in Exchange native mode. The existing Exchange organization can contain Exchange 2003 servers, and Exchange 2000 servers. There are many differences between Exchange Server 2007 and Exchange Server 2003. To explain these differences and how the different features can coexist is the main focus of this paper.