Hello, all.
I have operated two dns(primary and secondary) for one domain like below.
example.com IN NS ns1.example.com
example.com IN NS ns2.example.com
and there was a event that ns1.example.com dns was down.
As I know, if ns1 dns is down, all requests go to the ns2.example.com.
But when ns1.example.com dns was down, actually some people can't lookup the
domain.
What's the problem and how can I solve this problem?
If I adding some dns server like ns3,ns4.ns5, it would be helpful to solve this
problem?
Thanks.
Regards.
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