Comment Comment by BLKNSLVR What kind of tiers are there for filtering?Eg. Known bad domains, known bad IP addresses, incorrectly setup DKIM / SPF, no reverse DNS, non-matching reverse DNS, and that's before even looking at content to determine whether spam. parent BLKNSLVR 2 years ago
Eg. Known bad domains, known bad IP addresses, incorrectly setup DKIM / SPF, no reverse DNS, non-matching reverse DNS, and that's before even looking at content to determine whether spam.