I currently have my Bind DNS server set up to query from root servers and I have an Active Directory sub domain delegated in my DNS settings. My named.conf.options currently looks like this:

    acl internals {;;;};

options {
        directory "/var/cache/bind";

        auth-nxdomain no;    # conform to RFC1035
        listen-on-v6 { any; };

        allow-query { internals; };
        allow-recursion { internals; };

controls {
        inet allow { localhost; } keys { "rndc-key"; };

And my AD subdomain is delegated like this:

directory      IN      NS      ds1.directory.domain.com.
ds1.directory.domain.com.    IN      A

Everything works great here, but I would like to set up DNS forwarders instead of using the root servers. I've added the following to my named.conf.options file:

forwarders {;;
forward only;
dnssec-enable yes;
dnssec-validation yes;

This also seems to work, but now my AD subdomain is not working. If I try to ping directory.domain.com, it tells me unknown host. Is there somethign special I have to do with delegated sub domains when forwarding DNS requests? I'm guessing the subdomain is getting forwarded to the external DNS server. How can I get it to resolve to my DNS server first?



I figured it out. I have to cancel the forwarders on my authoritative zone. Otherwise queries will be forwarded to my global forwarding rule. So my zone in named.conf.local looks like this:

    zone "domain.com" {
        type master;
        file "/var/lib/bind/db.domain.com";
        forwarders {};

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.