The Exchange 2000 Server is a system which provides a backbone for communication, collaboration and information sharing. Exchange 2000 Server has features such as instant messaging, chat and conferencing, which are useful in business. This book is an implementation guide for administrators, either moving from Exchange 5.5 or those who are new to Exchange. The book contains eight pages of blueprints to illustrate how Exchange 2000 Server differs from the 5.5 version, and also show how it is tightly integrated with Windows 2000 Server's Active Directory.