Using Microsoft Exchange Server Connectors as Gateways

Both the Internet Mail Service and the X.400 Connector can serve as gateways between an MS Mail (PC) system and a foreign system. For example, you can install the Microsoft Exchange X.400 Connector or Internet Mail Service (or both) on a Microsoft Exchange Server computer. For every MS Mail (PC) postoffice that you want to access the foreign system, you must install a gateway access component. The MS Mail (PC) postoffices must be connected to the Microsoft Exchange Server computer by the Microsoft Mail Connector. Typically, a mail message is passed from the MS Mail (PC) postoffice to the MS Mail Connector, which is passed to either the X.400 Connector or Internet Mail Service. The message is then transferred from either the X.400 Connector or Internet Mail Service to the foreign system. A message from the foreign system to an MS Mail recipient takes the reverse route.

The following diagram illustrates these routes: