[Pdns-users] Recursor not resolving certain domains.

Oliver Kent admin at peerx.co
Sun Nov 20 14:40:27 UTC 2011


Sorry about the result, I did not shorten it on purpose. The problem is
that this server is live and another request came in after that. It makes
it very hard to trace where it starts and ends.

I had another look through the logs and found this: https://pastee.org/zn4bj

I ran a ping and traceroute to the IP and all went through fine. It just
seems to be timeing out, but I will try out some of the suggestions tonight.

Here is my pdns.conf: https://pastee.org/x8g39 (I am aware that it is set
to allow the world to recurse).

Oh and and update on the ppa would be much appreciated.

Regards

Oli Kent

On Sun, Nov 20, 2011 at 1:42 PM, Stefan Schmidt <zaphodb at zaphods.net> wrote:

> On Sat, Nov 19, 2011 at 12:33 PM, Oliver Kent <admin at peerx.co> wrote:
> > The problem I am having, specifically relates to one domain that the
> > recursor doesn't seem to be able to resolve, namely gogax.com. I have
> run
> > traceroutes from the server and they are all returned fine. Similarly, I
> > used dig to test whether the domain would resolve through google dns,
> and it
> > does. So in my opinion, the issue would appear to be with the recursor.
> >
> > I put the recursor in trace mode recently and ran the query again. Here
> are
> > the results from the log: https://pastee.org/5cq55 (password is
> powerdns).
>
> It seems this log has been cut short as it stops with
> Nov 18 14:31:13 DNSRS pdns_recursor[6707]: [1] www.gogax.com.: Trying
> IP 208.66.71.21:53, asking 'www.gogax.com.|A'
> up until that point it looks quite reasonable to me, meaning i noticed
> nothing that should hinder successful lookup and answer by the
> recursor.
>
> > If anyone could tell me what I am doing wrong, it would be greatly
> > appreciated. Also, if there is any other information you guys need,
> please
> > let me know.
>
> You could let us have a look at your config files too.
> Check if allow-recursion in pdns.conf does allow your client to
> actually get recursive results,
> experiment with turning off allow-recursion-override and
> lazy-recursion on and eventually dumping local network packets between
> powerdns and recursor via tshark might give some glue as to where it
> goes wrong.
>
> > I am running Ubuntu Lucid 10.04, PowerDNS version 2.9.22-3 (installed
> > through the Ubuntu repositories using apt-get) and PowerDNS recursor
> version
> > 3.3-rc2 (installed via Stefan Schmidt's ppa).
>
> Looks like i need to get that pap updated.
>
>  Stefan
>
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