The problem is not with dig, it is with dns. It looks like its not forwarding dns queries.
in your /etc/bind/named.conf.options (I'm using debian for examples here, I have not used many rpm distros) look for:
Code:
forwarders {
0.0.0.0;
};
If it is comented out, un comment it, then change the 0.0.0.0; to one of your ISP's dns. You may have to look around a bit to find the above, it may be in a different file.
Mine looks like this:
Code:
forward first;
forwarders {
209.181.0.1;
205.171.3.65;
};
Restart bind-- try your dig again. Should at least get you that far.
Have fun