Alternative DNS Servers
Choice and Deployment, and Optional SQL/LDAP Back Ends
This is the first book to survey the range of commonly-available DNS servers. It describes the different scenarios where each server is particularly useful, and helps you choose the most suitable server for your site or application. It explains how DNS information can be stored in LDAP directories, or SQL databases. Using these back-ends you can build robust DNS systems, with the advantage that they can also be managed by multiple sysadmins, in distributed locations. It also describes a few specialized DNS servers designed for some unusual purposes.