[Pdns-users] Recursion with authoritative server and subdomains

[ktm at rice.edu]

On Thu, Mar 27, 2014 at 02:06:01PM +0100, Matthias Leopold wrote:
> hi,
> 
> i have "a fairly standard" setup of a 3.3.1 powerdns server with
> mysql backend on a centos 6 system. the server is acting as an
> authoritative dns server and doing recursion for selected ip ranges.
> 
> the problem arises with subdomains of authoritative domains who
> should be delegated to other nameservers.
> 
> records table looks like this
> 
> mysql> select domain_id, name,type, content from records where
> domain_id = 36 and type = 'NS';
> +-----------+-----------------------+------+-------------------+
> | domain_id | name                  | type | content           |
> +-----------+-----------------------+------+-------------------+
> |        36 | abc.at                | NS   | ns1.abc.at        |
> |        36 | abc.at                | NS   | ns2.abc.at	       |
> |        36 | subd.abc.at           | NS   | ns3.abc.at        |
> |        36 | subd.abc.at           | NS   | ns4.abc.at        |
> 
> when i query ns1.abc.at for www.subd.abc.at i get answers with
> correct authority section, but no answer for www.subd.abc.at.
> 
> dig answer flags are
> ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 2, ADDITIONAL: 2
> 
> a bind9 server on ns2.abc.at, which acts as slave, resolves
> www.subd.abc.at correctly.
> 
> the problem is not the configured recursor, which also resolves
> www.subd.abc.at correctly.
> 
> can someone point me in the right direction?
> 
> thx
> matthias
> 

Hi Matthias,

The PDNS server is an authoritative server only and does not do
recursion. The BIND9 is both an authoritative server and a recursor
so this behavior is expected.

Regards,
Ken