Microsoft Exchange Server

Microsoft Exchange Server is a messaging and collaborative software product developed by Microsoft. It is part of the Windows Server System line of server products and is widely used by enterprises using Microsoft infrastructure solutions. Exchange's major features consist of electronic mail, shared calendars and tasks, and support for the mobile and web-based access to information, as well as supporting data storage.

Contents
1. History
2. Exchange Server 2003
3. Exchange Server 2007
4. Clustering and High Availability
5. Licensing
6. Exchange Hosting