Intermittent NXDOMAIN for a name we are forwarding
blrmaani at gmail.com
Sat Feb 20 01:08:56 UTC 2016
We have a DNS setup where we forward a name in one domain to 5 external nameservers. We see NXDOMAIN error intermittently (once in couple of weeks). How do I debug this issue?
I took a cache dump on our DNS and 2 out of 5 nameserver IPs appear in "Unassociated entries" when the problem happens.
Any advice to troubleshoot this issue is greatly appreciated.
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