Aside from the questionable aspects of this it doesn’t even understand some aspects of how email works. It requires MX records, but it’s fine to just have an A

Aside from the questionable aspects of this it doesn’t even understand some aspects of how email works. It requires MX records, but it’s fine to just have an A record and accept email there, I do that for one of my personal domains and this says it’s invalid, but nothing else has ever had a problem with it.