I have two DNS servers. DNS1 and DNS2, they both host forward and reverse lookup zones.
A PTR record exists in DNS2 for 10.15.20.25
My clients has their dns server order set to DNS1 then DNS2.
When I perform a reverse lookup using ping -a on 10.15.20.25 it does not resolve the name.
When I switch the DNS primary to DNS2 and secondary to DNS1 and run a ping -a on 10.15.20.25 DOES resolve correctly.
I thought DNS searched each DNS server in the list of DNS servers for lookups and if it could not find anything it would go onto the second DNS server. Forward lookups are working correctly in the environment, but reverse lookups are not.
Any ideas?