DNS Caching Issue
Torsten Segner
torsten at segner.eu
Tue Jul 26 07:45:18 UTC 2011
Am Mon, 25 Jul 2011 08:22:00 -0600
schrieb "Sathyan Arjunan (sarjunan) [CONTRACTOR]" <sarjunan at micron.com>:
> Recent days, I am facing frequent caching issues with my DNS servers
> which are responsible for recursive lookup to external queries. As a
> temporary solution, we used to refresh the named daemon to clear the
> cache. To isolate this issue we upgraded the BIND to "BIND 9.7.3" but
> even after the upgrade issue repeats.
>
>
>
> If I do a nslookup for "mail.sin.gpi-g.com", it fails.
>
>
>
> nslookup mail.sin.gpi-g.com
> Server: dnsserver
>
> Address: x.x.x.x#53
>
>
>
> ** server can't find mail.sin.gpi-g.com: SERVFAIL
>
>
>
> To fix this I have to restart the named daemon in caching DNS server.
> Once I restart, the lookup resolves well. However the issue appears
> again in few days. Any thoughts?
>
>
>
> nslookup mail.sin.gpi-g.com
>
> Server: dnsserver
>
> Address: x.x.x.x#53
>
>
>
> Non-authoritative answer:
>
> Name: mail.sin.gpi-g.com
>
> Address: 203.175.163.180
>
>
>
> Regards,
>
> --Sathyan
>
One of the authoritative nameservers (nameserver2.gpi-g.com / 202.182.61.51) is not responding properly.
You should ask the administrator (rico at gpi-g.com) of the server to fix this.
Ciao
Torsten
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