problems resolving certain domains

[Ivo Anon]

I am running Debian linux and using bind 9.2.3-2. Everything seems to work
OK except for a couple of domains (e.g. www.tweakers.net) which I can't seem
to be able to resolve using this DNS.

Somebody told me that maybe it's the firewall (also Debian linux) but I
checked and there are no rules that would drop these requests. I also can't
imagine the firewall would actually drop requests for certain domains while
accepting requests for other domains.