[Declude.JunkMail] Greylisting

[Joshua Levitsky]

Title: Greylisting

Just saw this on /. and thought that you all might be interested...


http://projects.puremagic.com/greylisting/


I've just published a paper on a new and unique spam blocking method called "Greylisting".  The best thing about it other than achieving better than 97% effectiveness in blocking spam, is that it practically eliminates the main problem of other solutions: the false-positive.  There's even source code for an example implementation written as a perl filter for sendmail, along with instructions for installing, so you can get up and running quickly.