On Mon, 19 Aug 2013 07:31:33 -0700 (PDT) John Hardin <jhar...@impsec.org> wrote:
> Have you considered TCP Tarpitting instead of just blocking them? > Blocking them doesn't actually *punish* them. Getting their MTAs > *stuck* for hours or days does. IMO, tarpitting is useless. When you have hundreds, thousands or more compromised zombie computers at your disposal, you're not even going to notice tarpitting. Spammers can also use custom software with short timeouts to move on quickly if they think they're being tarpitted. Regards, David.