http://lpoaj76nfopd5lpinbskyqtroppamrzhhay3g4vvjm75st6ger34lbyd.onion/posts/2020/08/email-sucks.html
Instead it requires some ugly DNS-level hacks (which is insecure if you do not have DNSSEC, which is not commonplace, unlike you may assume, and it typically only works with paid DNS services), such as SPF, DKIM and DMARC, or even just reverse DNS / PTR records (which is kind of pointless, but required for sending to most major mailservers, while making selfhosting basically impossible, because home ISPs do not offer you to control PTR records for your IP address), as specified by RFC 7601 section 3 . But,...