The names mentioned appear to be resolving correctly with Google Public DNS now.
Is this still a problem on your end?
On Mon, Feb 4, 2019 at 1:17 PM <
opiu...@gmail.com> wrote:
>
> We have a three nameservers
ns1.ukit.com ns2.ukit.com and
ns3.ukit.com.
> The software is PowerDNS 4.1.5 packed into docker containers, the network ports are exposed via docker-proxy (not "--net=host").
> The backend for the PowerDNS is "remote", and it interacts with our self-made restful service which serves records from MongoDB.
>
> The problem is that Google's public DNS sometimes returns our SOA record for the queries of A-records, like there is no A-record at all. In result our websites are becoming inaccessible at random time from random locations across the world, according to reports from
host-tracker.com (a geo-spread monitoring service) our users also have reported us about theese problems with availability of their sites. We also could get these empty anwers ourselves quering 8.8.8.8 and 8.8.4.4 (approximately 1 from 10 attempts), while other public DNS services seemed not to encountered the same, we tried 1.1.1.1 and 77.88.8.8.
>
> The questions are:
>
> - Why Google's public DNS does so?
> - Are there any special requirements for authoritative DNS-servers to be operable normally via Google's public DNS? E.g. response time, answers format etc.
> - Is there a way to check compatibility with Google's public DNS ourselves, apart from listed here
https://developers.google.com/speed/public-dns/docs/troubleshooting?
That is our recommended approach.
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