[Pdns-users] How to set up pdns recursor to repeat the query if it does not get an answer

Mira Krejci krejci at i3.cz
Fri Sep 18 14:05:04 UTC 2020

Hi Winfried,

thank you for your reply.
If it's a feature and can't be changed, I have a big problem that I'll
have to solve by changing the software to another.
For example, Bind asks more than once if answer does not come. Users are
angry that DNS resolving does not work for them (of course, it is to
blame for authoritative servers of a specific domain).
But I have to solve it somehow.


Dne 18. 09. 20 v 15:34 Winfried Angele napsal(a):
> Hi Mira,
> Yes the Recursor does no retry on *this* auth. But it tries on the
> other nameservers from the NS RR set. IPv4 and IPv6. So if you have
> only one auth, Recursor tries two times, IPv4 and IPv6 if available.
> Winfried
> Am 18. September 2020 14:47:49 MESZ schrieb Mira Krejci via Pdns-users
> <pdns-users at mailman.powerdns.com>:
>     Hi,
>     I have a problem that I can't force the pdns recursor to query the
>     authoritative servers repeatedly if they do not answer. Recursor tries
>     the query only once and then return an error (SERVFAIL) to the client.
>     This is very problematic when the authoritative server is overloaded or
>     there are some problems on the network. I didn't find any way in the
>     configuration to change it.
>     Server version: 4.2.2-1 (from EPEL repo on CentOS 8)
>     Can anyone help?
>     Thanks.
>     Mira
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