That would work if most spam wasn't from the cartel. I receive single digit percentage of "spam" from randoms, 95%+ is from Gmail/Google, o365 or mailgun/whatever. Not one of them can either filter their users or actually action abuse reports.

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KlutzySofa 17 hours ago | parent [-]

The reason for you only seeing spam from the larger providers is that they are filtering out everyone else.

They should also deal with the individual accounts etc, but thats the difficult problem.

	▲	throwaway67743 16 hours ago \| parent [-]
		I enforce strict spec and behaviour compliance, as well as policies (SPF, dkim, etc). Aside from a very small number of well known spam/abuse sources, it's largely from legitimate mail accounts on Gmail/outlook etc. or idiot msps.