forwarding zone to another DNS server problem

[Barry Margolin]

In article <mailman.1155.1414921350.26362.bind-users at lists.isc.org>,
 houguanghua <houguanghua at hotmail.com> wrote:

> Dear all,
>  
> Can bind support forwarding zone to another DNS server? In my testing, for 
> loacl name servers, it can. But for authority name servers, it can't.  
>  
> I have a authorative DNS server  which are authorative for the domain 
> "test.com".  I would now want the machine just forward all incoming queries 
> for "test.com" to the 83.248.21.12 server. The named.conf is as follows:

By definition an authoritative server knows the answers itself, it 
doesn't need to forward.

> The named.conf is as follows:
> options {
>   directory "/var/cache/bind";  
>   version "none";
>   allow-recursion {"none";};
>  };
> zone "test.com" in{
> type forward;
> forwarders {83.248.21.12;};
> };

That's not the configuration of an authoritative server. You're only 
authoritative if it's "type master" or "type slave".

> The name server (83.248.21.12) isn't registered, but is configured as a 
> normal authority name server.
> The named.conf is as follows:
> options {
>   directory "/var/cache/bind";  
>   version "none";
>   allow-recursion {"none";};
>  };
> zone "test.com" in{
> type master;
> file zone/test.com.db";
> };
> This is the test.com.db file content:
> $ORIGIN test.com.
> $TTL 1W
> @   IN  SOA     ns1.test.com. postmaster.test.com. (
>                                6            ; serial number
>                                3600         ; refresh   [1h]
>                                600          ; retry     [10m]
>                                86400        ; expire    [1d]
>                                3600 )       ; min TTL   [1h]
> ;
>       IN     NS      ns1.test.com.
> www           IN      A       172.22.2.150
> 
>  
> But the problem is that the any dns record can't be resolved when querying it 
> for example www.test.com A record. What's wrong?
>  

Are you sending recursive queries to the first server? Forwarding will 
only be done if the client requests recursion. Recursive servers don't 
request recursion when they query the registered servers for a zone.

-- 
Barry Margolin
Arlington, MA