The fifth edition covers BIND 9.3.2, the most recent release of the BIND 9 series, as well as BIND 8.4.7. BIND 9.3.2 contains further improvements in security and IPv6 support, and important new features such as internationalized domain names, ENUM (electronic numbering), and SPF (the Sender Policy Framework). Whether you're an administrator involved with DNS on a daily basis or a user who wants to be more informed about the Internet and how it works, you'll find that this book is essential reading.

本书内容包括：背景、DNS是如何工作的、建立BIND、DNS和电子邮件、培植主机、维护BIND、扩展你的域、用解析器和名字服务器的库例程编程等。