Netware 6.5 sp5

I have 5 dns servers. One of the servers is not forwarding dns
requests to my isp. The local domains on the dns server resolve just
fine, but on the one server it won't forward any requests to my isp. I
have tried the following:

-recreated this dns server from scratch
-put the forward ip addresses in the forward tab, also tried it
-can ping any domain name from the server console
-tried the named.nlm from sp6
-rebooted the server
-tested connection to isp, is working fine.

I'm not sure where to go from here. Is there something else that I'm