If your site is connected to the Internet, your DNS name server's boot files must point to a common cache file (usually called named.ca) that identifies the root domain name servers. A template for this file may be obtained from InterNIC registration services via:
Anonymous FTP. The FTP site is: ftp.rs.internic.net. The file name is: /domain/named.root.
Gopher. The Gopher site is: rs.internic.net. The file is: named.root which can be found under the InterNIC Registration Services menu, InterNIC Registration Archives submenu.
If you are naming your DNS files according to the conventions in this manual, you need to move this file to /var/named/named.ca.