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
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