Serverfail after Nameserver change

[micarl]

I would appreciate your help and direction as i'm new.

Using both guides : fedora 10 server and godaddy Nameserver
eveything seen to verify ok base on your guide. However I’m having a problem after changing nameserver, none of my domain can fine or make connection to my isp server.
Doing the test :
Dig example.com …. I get time out or serverfail
Dig @ns1.nameserver .com any example.com … verified good
Ns1. server and ns2 server work ok if I type in the browser…… but not my domain.