We are having trouble with DNS. I recently switched internet providers and the problem followed us, at which point I realized our 2008 R2 Domain Controller's DDNS must be the problem.
I switch to google DNS (18.104.22.168) and sites like paypal.com, zynga.com, etc work fine. When I switch to our local DNS server it eventually times out.
There are no extra zones in for those domains in the DNS server, any ideas as to how I can diagnose the health of DNS and fix the problem? It is driving everyone crazy at the office when they cant access random sites.