Alternative DNS Servers: Choice and Deployment, and Optional SQL/LDAP Back-Ends
"A valuable source of information for every PowerDNS administrator!"  —Norbert Sendetzky, developer,LDAP and OpenDBXback-ends to PowerDNS"The first book to describe NSD and Unbound in excellent detail."  —NLnet Labs, developer, NSD and Unbound"Jan-Piet has done a great job describing PowerDNS—I found a few features in this book even I didn't know about!"  —Bert Hubert, principal developer,PowerDNS"An informative, accurate guide for anyone interested in learning more about DNS."  —Sam Trenholme, developer,MaraDNS"Finally—a clear, in-depth, and accessible guide to using BIND-DLZ! A must read for anyone considering alternate DNS servers."  —Rob Butler,BIND-DLZproject creator and developer