How to Configure Internet Mail Flow in Exchange Server 2007http://blogs.technet.com/asiasupp/archive/2007/06/26/how-to-configure-internet-mail-flow-in-exchange-server-2007.aspxExchange Server 2007 allows customers to flexibly configure and control inbound and outbound Internet mail flow in a way that meets the requirements of their environments. The three typical mail flow scenarios are: You send and receive Internet e-mailen-USCommunityServer 2.1 SP1 (Build: 61025.2)