In case you’re not familiar with the term “blacklist” I will elaborate. There are three colours representing different kind of list; White, Black and Red. White is a free pass with no questions asked, Black doesn’t let you in the club and Red puts you in a headlock until the cops arrive and take you away.
My blacklist is very small at the moment only consisting of one email address and one IP address. I have some anti-spam measures in place but they don’t stop everyone getting through so I look for a patten from the IP and email address marked as spam. Any that turn up a lot go on the blacklist and are never heard from again….hopefully.