On the server side, the book focuses on the University of Washington IMAP server--the standard implementation that IMAP inventor Mark Crispin wrote--and the feature-rich Cyrus IMAP server. The features of each are explained, in addition to how each integrates with its operating system. "Common Tasks" for each are covered, including details of precisely what system administrators have to do to establish access privileges on a mailbox, add users, set up shared folders, and so on through their respective feature sets. Most of the how-to material takes the form of "type this, get that" listings, with plenty of annotation that explains what's going on. Later sections are platform-neutral, covering security (perhaps better covered in specialized texts), spam filtering, and performance optimization. Managing IMAP has done a great job of cataloguing and commenting upon the various IMAP administration utilities that exist. --David Wall

Topics covered: The Internet Mail Access Protocol (IMAP) and its implementation, especially in the University of Washington's IMAP server and the Cyrus IMAP server. After presenting the case for IMAP and comparing it to Post Office Protocol (POP), the book shows how to set up and administer both major IMAP servers. It also compares IMAP clients. Other topics that are covered include security, user management, and scalability. A directory of IMAP administration interfaces and an IMAP command reference round out the volume.