It’s not hard to receive or filter mail - knowing that somebody will receive your email after you send it is another thing entirely.
replyThat is the exact problem that got me to abandon my splendidly working, self-hosted email stack. I had so many instances of mail just not getting delivered, despite doing absolutely everything correctly, that I gave up.
replyThankfully not a problem we've encountered yet. All my mail is DKIM signed, SPF aligned etc. I also registered on dnswl.org which is a signal quite a few people seem to use.
replyout of curiosity, are you talking about personal, small business, or corporate?
reply"spam is solved" looks a lot different at each of those
Personal mailserver sorry. rspamd stops all the sent-using-my-from-address "i hacked you" emails (DMARC drops them) and all the other random spam stuff. I can imagine though a large business with thousands of email accounts it wouldn't be as easy though.
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