3 ms·
SPF, DKIM, DMARC, IP reputation, whitelists, blacklists, graylists, spam filters, ... https://xkcd.com/927/ https://xkcd.com/927/
by bell-cot 2y ago
SPF, DKIM, DMARC, IP reputation, whitelists, blacklists, graylists, spam filters, ...
https://xkcd.com/927/ https://xkcd.com/927/
- drpossum 2y agough