[Pdns-users] recursor fail to resolve

[Brian Candler]

On 04/05/2020 13:41, Remi Gacogne via Pdns-users wrote:
> I don't know how bind does resolve but we are doing the right thing
> here, we get a delegation to two NS (mail1.alestra.net.mx. and
> dns.alestra.net.mx.) for s-s.mx. from the mx. zone, and both of these
> servers fail to respond to the first request we send to them. There is
> nothing else to try but return a SERVFAIL. This zone is broken and needs
> to be fixed.

I have a vague idea that bind retries each server a few times, rather 
than giving up on one attempt to each.

<looks around> Hmm, RFC1536 talks about this.