Domain name not resolving to ip address
I am using vps server on centos 7 64 bit. I have already setup webmin, apache, php and installed bind dns server.
I have setup custom nameservers ns1 and ns2 at domain registrar and pointed them to my vps external ip address already.
I have also added all relevant A records and NS records for the domain name in bind dns server settings in webmin but my domain is still unable to resolve to server ip address when i enter in web browser.
I am not sure what I am still missing in settings.
Please help me