I'm having some trouble with my DNS'ing on my network.
I'm finding that I have to restart the DNS services quite a lot (once a week at least) because web pages are not resolving, also my 3CX server keeps not being able to resolve the dns for the SIP server address.
Initially I had my isp's DNS IP's in the DNS forwarders, but I had an issue whereby our SQL business app stopped being able to send out SMS's. Our head tech suggested we remove them which solved the issue for sending SMS's. Currently they are empty.
I've checked the DNS event logs and can't see any errors there. I've also set the DNS server to scavenge old records every 7days.
I'm wondering, to resolve my DNS'ing dropping out, should I re-add my isp DNS addresses to the DNS forwarders or add the Google ones as well? I'm worried that the SMS's from out business app will stop sending if I do that.