4 ms·

I don't think that's sufficient on its own. If there's a CNAME on the domain, you'd have to follow the chain of CNAMEs to find an MX record (granted, that's not

I don't think that's sufficient on its own. If there's a CNAME on the domain, you'd have to follow the chain of CNAMEs to find an MX record (granted, that's not very common, but I think it's valid usage)

JdeBP 8y ago
Resolving proxy DNS servers do that for you. A successful transaction against a resolving proxy DNS server yields a complete answer with all of the alias chain and the final resource record set (or "no such name" indicator). * http://jdebp.info./FGA/dns-query-resolution.html http://jdebp.info./FGA/dns-query-resolution.html