What if we just got to the heart of the matter and admitted that greylisting is useless 2023? It was meant to annoy botnet spammers etc. who, once upon a time, did not have big iron and big disks to be able to queue and retry. That reality basically no longer exists. I tested greylisting myself this year in my own mail-in-a-box setup and found it was just a pain in the ass that delayed password reset emails while I spent too much time trying to whitelist stuff I cared about receiving in a timely fashion. It's a 1990s style configuration option that makes little sense in 2023 and I don't really see any data proving that it actually does anything that inhibits modern spam. The botnets can retry, too.
Cheers, Al Iverson -- Al Iverson / Deliverability blogging at www.spamresource.com Subscribe to the weekly newsletter at wombatmail.com/sr.cgi DNS Tools at xnnd.com / (312) 725-0130 / Chicago (Central Time) _______________________________________________ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
