[Pdns-users] Gargabe records on slave

Peter van Dijk peter.van.dijk at powerdns.com
Wed Aug 12 10:36:04 UTC 2015

Hello Bjoern,

On 3 Aug 2015, at 12:39, Bjoern Franke wrote:

> I disabled dnssec now, but lists.ffnw.de still produces problems on 
> our
> slave |1|lists.ffnw.de||||||0||1 exists.

This is not about DNSSEC - the empty non-terminals are a requirement of 
DNS itself. PowerDNS did not honour this requirement in the past.

> lists.ffnw.de has address
> lists.ffnw.de has IPv6 address 2a03:4000:6:8025::1
> lists.ffnw.de mail is handled by 10 srv01.ffnw.de.
> lists.ffnw.de mail is handled by 20 srv02.ffnw.de.
> So if a user asks srv02.ffnw.de, he/she cannot connect to
> lists.ffnw.de. The issue does not occur for ffnw.de which also has a
> _domainkey.ffnw.de record.

If I understand this right, your problem is that ‘lists.ffnw.de’ 
stops matching your wildcard because of the empty non-terminal? If that 
is the issue, just put ‘lists.ffnw.de’ with A/AAAA/MX like the 
wildcard, into your zone.

Kind regards,
Peter van Dijk
PowerDNS.COM BV - https://www.powerdns.com/

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