Well, I have an ISP router in which I have configured DNS Servers to use (Primary & Secondary) like Google DNS. It works just fine.

But now I have setup a computer with DNS server (Simple DNS Plus). I got it working by settings my internal DNS Server IP Address in computer. i.e. 192.168.1.3

So, instead of settings my internal DNS IP Address in every computer in my network, I want to setup DNS Server into my router. So on every DHCP request, computer get DNS Server to use.

So I configured it like this:

Primary DNS: 192.168.1.3
Secondry DNS: (left blank)

After applying and DNS Requests stop resolving. But strange part is DNS request does goes to DNS Server but maybe not returned back, because all DNS request were available in cache logs.

I don't know why this is not working, let me know if you have any solution or wordaround for this.

Thanks!

Update 1:

NSLOOKUP Result

C:\Users\user>nslookup google.com
DNS request timed out.
    timeout was 2 seconds.
Server:  UnKnown
Address:  192.168.1.1

DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
*** Request to UnKnown timed-out