Exchange handles communications through profiles , which are basically collections of services .
Internet Mail is considered a service, as is Microsoft Network, and Microsoft Fax. I use Exchange for all three, and find it easiest to have a separate profile for Internet Mail and Microsoft Network. If you put multiple services in the same profile, sometimes you'll find Exchange attempting to dial in to Microsoft Network to deliver your internet mail if your normal Internet provider is down. My Computer , then Control Panel , and double-click the Mail and Fax icon. This will bring up the profile you have set as your default.