> You physically can’t put an IP address into an MX DNS record
Per TFA,
> some mail servers do configure an IP address. Many mail servers are lenient when it comes to this misconfiguration and will deliver mails nevertheless
I.E. people can and do put IP addresses into these things. And any actual example is a complete rebuttal of claims of impossibility.
Standards don't have any cosmic significance. If people use a thing in a manner, then it's also that thing.
Per TFA,
> some mail servers do configure an IP address. Many mail servers are lenient when it comes to this misconfiguration and will deliver mails nevertheless
I.E. people can and do put IP addresses into these things. And any actual example is a complete rebuttal of claims of impossibility.
Standards don't have any cosmic significance. If people use a thing in a manner, then it's also that thing.