Koozali.org formerly Contribs.org

"Razor" anti-spam

Bill Talcott

"Razor" anti-spam
« on: June 21, 2002, 12:20:06 AM »

Looks interesting. A signature is created for each spam, and shared across the system. A message matching that signature going to any other Razor user automatically gets filtered out to a spam folder. It's similar to Napster and FileMirrors.com in that each person's individual contribution helps out a bunch of other people. It also has some neat tricks like random number and fuzzy hashes, so spammers can't figure out how to get around the signature. It also rates user submissions, and gives more weight to the reliable users' submissions.

What would have to be done to implement this on SME? Anyone up to that task?


Re: "Razor" anti-spam
« Reply #1 on: June 21, 2002, 09:09:24 PM »
Hi there,

Yes, Razor is a great tool and easy to install on SME (just follow the readme) but you need "make" and a compiler on your system (which isn't recommended on production servers but which you can get at http://myezserver.com/downloads/mitel/contrib/dev-tools).
What I do to run it is use fetchmail and procmail (single-drop) every 15 minutes and I put
*/5     *       *       *       1-7 youruser /usr/bin/razor-check -M /home/e-smith/files/users/youruser/Maildir/new/ (where youruser is the user whose mailbox you want to scan) in the crontab so that Razor scans the mailbox every 5 minutes...