On Fri, 2008-06-20 at 07:57 +1000, Mary Gardiner wrote: > On Thu, Jun 19, 2008, Sean Murphy wrote: > > All, > > > > I am after a good Anti spam software program for Linux which is shell > > based. I am aware of Spam assassign. But I would like to know if > > there is anything else which is better? > > Better could mean a few things in the context of spam filtering, could > you clarify which of these features is more important to you: > > 1. overall accuracy (false negatives and false positives) > 2. fewest number of false negatives (spam that gets through to your > inbox) > 3. fewest number of false positives (good mail that ends up marked as > spam) > 4. good accuracy when in the default configuration, no twiddling > required > 5. good for processing large volumes of mail without insane resources > > I use SpamAssassin and find it does really well, but it falls down at #4 > and #5. I have to train the Bayesian[1] classifiers on all my mail in order > to get good-to-me accuracy, so I am certainly not relying on the default > configuration. (I suspect I'd do just as well switching entirely to a > Bayesian system, but since SpamAssassin is now doing fine I have not > done so). > > And it's a resource hog, it sometimes takes 8 seconds to scan a mail on > my OK-standard desktop system. So if you were receiving more than an > email about every 8 seconds you'd be looking at performance tuning and > additional less hoggy measures, or at alternatives. (Everything that > processes the full body of an email is somewhat resource intensive, but > I understand that SA is not great.)
I'm using Bogofilter (bayesian filter) to sort spam into "good", "bad" or "unsure" at a user level. I've got a cron shell script that passes manually sorted "unsure" email through the filter hourly for training purposes and it works really well at the client level. I don't know if there is a package to do that. I wrote the script myself, which means that it is crude and simple :) This doesn't stop spam... it just means you never have to read it. David. -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
