Блокування домену відправника пошти

Postfix

https://opensuse.opensuse.narkive.com/qIAAjEQR/sle-postfix-blocking-mails-from-a-top-level-domain

 

Amavis

https://bobcares.com/blog/amavis-blacklist-domain/ 

https://community.keyhelp.de/viewtopic.php?t=9945

https://wiki.tothnet.hu/books/spamassassin/page/blacklist-domainsmail-addresses-in-spamassassin

https://amavis-users.amavis.narkive.com/OQWM5YL8/how-can-i-block-a-single-domain