I have a Window 2012 R2 server running DNS, DHCP, and AD DS and a sonicwall firewall. For some reason that my DNS server is not working. When I look at my network connection from Window 7, I can see that IPv4 Default Gateway is 192.168.1.1, IPv4 DHCP server is on 192.168.1.30 but IPv DNS server is on 68.x.x.x It is not pointing to my DNS which should be the same as the DHCP server (192.168.1.30). I am not sure what went wrong as in if there is a mis-configuration in sonicwall firewall/router or the DNS server at 192.168.1.30.
I can see my client PC is not talking to the local DNS server 192.168.1.30 but instead on 68.x.x.x my ISP. Is there a way to configure in order to ensure my client PC will ask my local DNS first if no information can be found then forward to the DNS of my ISP and so forth? I have set my TCP/IPv4 to Obtain an IP address automatically and Obtain DNS server address automatically. Is there a way to set obtain IP and DNS server automatically rather than set those to static?