We recently moved office and we changed our ISP. The DNS forwarders were changed to 220.127.116.11 and we the dns resolution to be very slow and sometimes times out. the internal server dns is 192.168.1.1. The dns forwarders take a long time to resolve.
On a different subnet where we use 18.104.22.168 as the dns, no problems.
Is my internal dns corrupt? How do I resolve this issue.