On Apr 20, 2011, at 2:19 AM, Adam Goodall wrote:
> However if a client queries server A for mail.testdomain.com (type any) the
> request is not answered. From the logs on server B i can see that server A is
> only forwarding on a request of type A. As an A record for
> mail.testdomain.com does not exist on server B it does not resolve.
>
> If i then specifically query Server A for mail.testdomain.com of type CNAME,
> it resolves as expected. Subsequent requests against server A for
> mail.testdomain.com of type any then resolve, presumably because it is
> already in the cache.
>
> Hopefully that makes sense! Has anyone had a similar issue and did you come
> up with a work around? Is this expected behaviour or a bug?
This is an excellent example of why you should not forward to an auth-only
server. Use a stub zone instead. You might need to give it an empty forwarders
list, to override forwarding set in either the options or view statements.
For example:
zone "testdomain.com" {
type stub;
masters { 192.168.1.1; };
forwarders { };
};
Try it, you'll like it.
Chris Buxton
BlueCat Networks
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