Please check all the possible causes at our Why is my domain not working? FAQ entry. - If you have checked that your domain and hosting are renewed and that the DNS for your domain is correct and is functioning correctly then if you have your email services with us please check the following possible causes of email issues.
10 Ways to Troubleshoot DNS Resolution Issues Jun 17, 2009 DNS Server service does not resolve some external DNS You do not configure any forwarders on the DNS server. In this scenario, the DNS Server service does not resolve some external DNS names after it works for a while. Therefore, you cannot access some applications or some websites that rely on these external DNS names. Notes. To resolve this issue, you have to restart the DNS Server service or Fix your DNS problems | Computerworld One possibility is that one of its DNS servers is down and you're trying to access the downed server. If you know the addresses of the DNS servers, ping each of your ISP's DNS servers, and if any Troubleshooting DNS Servers | Microsoft® Docs
Check the Source of the Problem. Access the website from another device, perhaps using a 4G …
Why is DNS Forwarder not resolving/working? - Server Fault I think that your DC with server 127.0.0.1 can be configured in the Forwarders tab in DNS admin tool option to get the 10.1.1.2 or any google (8.8.8.8 and 8.8.4.4) in that order in the forwarder order. you did not need to deploy the 10.1.1.9 as a forwarder. 10 Ways to Troubleshoot DNS Resolution Issues
If your modem or router doesn’t work properly, the DNS server could stop responding, either. You can restart your modem and router if you have one to solve the problem. Press the power button of your modem or router to power off, then wait for a while and press the power button again to start it again.
5 Things Your ISP Doesn't Want You to Know About Their DNS