I've a DNS resolution issue as below and it's just happened recently.
My backup failed to connect to the NAS storage due to this issue.
When i nslookup nasb01.fish.com, I will get result:
Addresses: 57.x.x.x, 57.y.y.y, 57.z.z.z, 126.96.36.199
However, from the DNS server i couldn't find any host A record for nasb01.fish.com.
Tried to nslookup the IP, and the IP resolves as follow:
57.x.x.x = nas111.fish.com
57.y.y.y = nas132.fish.com
57.z.z.z = nas27.fish.com
188.8.131.52 = nasb01.something.fish.com
Can you guide me how to troubleshoot this issue?
The correct resolution is nasb01.fish.com = nasb01.something.fish.com = 184.108.40.206