It's understandable to flag mails from reputation domains as spams if there's no SPF and DMARC, but there is. It's totally unreasonable. > The filtering is sch

It's understandable to flag mails from reputation domains as spams if there's no SPF and DMARC, but there is. It's totally unreasonable. > The filtering is schizophrenic. The unfortunate result of machine learning? I guess Google's spam filter has lots of pattern-matching and heuristics that don't follow "the rules of E-mails" exactly. Anecdotes in the comments I linked says Google's spam filter has became more aggressive in recent years, I suspect it must be ML. I hope other HN readers can give a more informative answer to your post, as a sender, I'm having the same problem, it's two sides of the same coin...