Is it possible to force setting CNAME record of the DNS?
问题 Suppose I have two domain names (domainA, domainB). I set the CNAME record of domainA to domainB, so whenever a user resolves domainA, he will be redirected to resolving domainB instead. My question is if it is possible to restrict accessing domainB directly. So no one can resolve domainB unless it has first resolved domainA. 回答1: The DNS system is designed to be an open system that allows anyone to resolve addresses. In its native form it is not possible to do what you are looking for. Even