I have a Windows Server 2016 domain on a /24 network. I have the DC setup as DNS and DHCP servers. The gateway is a Xycel router. The client computers use both DHCP and static IP from the DNS server. The problem I am having is two-fold. When I state the DC DNS IP as the primary DNS server (DHCP also list this IP as well). 1. Having problems getting out to the outside world. I am seeing either No Internet or Slow Internet (problems resolving and more than 30 hops on tracert), and some pages are loading incorrectly.
When, I add the Google Public DNS 18.104.22.168 as the secondary DNS server, the Internet seems to work fine. Pages resolve and hops and ms are normal.
So, I know I have a DNS issue going on.
Question: Would DNS forwarding correct this problem? If so what IP address do I forward to?
Google Public? The external IP address for the ISP? The internal IP address for the Xycel router?
Looking for answers?
One other note: This is a clean install (not a migration or upgrade)
Thanks in advance