22Jul/070
Block Specific E-mail Addresses with Exim
Recently I was flooded with e-mails a friend sent me. Mails with PowerPoint or PDF attachments of hundreds of kilobytes with jokes. Although I told him to stop this he ignored me and continued sending me this crap.
I could create a rule in Mail.app which deletes such mails but that wouldn't help as the rule mechanism only works with received mails. But I don't even want to have to download them.
A better solution is to let the mail server (here [Exim](http://www.exim.org)) deny such mails while they are delivered.
10Dec/060
Implementing Greylisting with Exim
Due to the increasing amount of annoying SPAM mails there exist many techniques to reduce that junk.
One very successful approach is called "[Greylisting](http://en.wikipedia.org/wiki/Greylisting)".
