Managing Microsoft Exchange Server is written for Exchange Server administrators--the people who have to make it work. Paul Robichaux tells you from the beginning that his book doesn't deal with mail connectors (PC or mainframe), doesn't cover migration planning, and doesn't tackle Exchange scripting or application development. This leaves plenty of scope since Exchange Server is larger and more complex than Windows NT, with hundreds of configuration dialogs. Robichaux starts with considerations that precede breaking the CD-ROM seals, and by chapter 4 you're ready to install it. Next you learn about Exchange Administrator, the front end that enables users to access and edit Exchange Server's operation. The book usefully lists the containers--the components underlying Exchange Server--which Administrator controls. At this point, you start to get your hands dirty. The sheer wealth of practical detail that follows--particularly the sections on managing Internet mail and security--calls for careful examination. Robichaux clearly knows his subject. He doesn't slavishly tow the Microsoft line and is happy to make suggestions based on real experience. For example, he recommends against using Exchange Server's automatic restart feature. If you're responsible for installing and managing Exchange Server, you should have this book on your shelf. --Steve Patient, amazon.co.uk