Working with the BIND Configuration File (named.conf)
To make your name server do anything useful, you need to make sure that it is topologically in the right place with respect to its clients and the rest of the network and that it is configured to interoperate properly with other name servers. A misconfigured name server can result in deluges of DNS traffic between your server and the root servers as it tries futilely to synchronize its data. Your /etc/namedb/named.conf file must be constructed properly, so it needs to be understood properly.
As should be a habit by now, be sure to make a backup copy of your named.conf file (such as named.conf.20060315) before you make any changes to it. Always leave yourself the option to revert to ...