[Cialug] Greylisting

[Nathan C. Smith]

I've been working with greylisting (http://greylisting.org/) with one 
of my qmail servers and so far, I've seen a dramatic improvement in 
spam reduction over any sort of bayesian spam filtering!  The load 
average on my server has dropped to near 0.06 where it normally hangs 
around 1.0-15.0 depending on who's attacking it ;)

If anyone is interested, I can share more about how it works, but the 
websites available are probably a better teacher than I am.


This is interesting, I had been wondering how long it would be before there
was a need to "quarantine" e-mail for some abount of time.  I had thought it
would be necessary for viruses.  (hold the message for n units of time,
update the virus signature, scan the message again, pass it along)
Interesting that it might help with Spam in this way.

-Nate