How to Configure DNS Forwarders in Windows Server 2012 R2
To configure a DNS server to use forwarders using the Windows Server 2012 R2
1.Open DNS Manager.
2.In the console tree, click the applicable DNS server.
3.On the Action menu, click Properties.
4.On the Forwarders tab, under DNS domain, click a domain name.
5.Under Selected domain’s forwarder IP address list, type the IP address of a forwarder, and then click Add.
6. You can type the IP addresses for your ISP or Google Public Addresses 8.8.8.8 and 8.8.4.4.
That’s it!