On Fri, 2003-07-25 at 18:02, Raul Dias wrote: > hi Kevin, > > Em Sex, 2003-07-25 Ã s 07:07, Kevin Buzzard escreveu: > > On 24 Jul 2003, Raul Dias wrote: > > > > > Something I found interesting was using Razor + Pyzor + Dcc. > > > Then I create meta rules that matchs: > > > Razor + Pyzor > > > Razor + Dcc > > > Pyzor + Dcc > > > Razor + Pyzor + Dcc (this will also, of course, match all three before). > > I think maybe this is a move in the wrong direction. This type of re-scoring serves to reinforce the results of similar types of service which are prone to similar problems, you'll amplify errors. I've already done the opposite to this so I only get a score for razor or pyzor, not both.
((razor || pyzor) && (bayes_90 || bayes_99) or something like that would be a much better way to work, add score for things that look like spam even when looked at from different perspectves. > > This is definitely an interesting idea! But is it a good one? Perhaps > > (indeed probably) but one has to answer the following question > > before one is sure. Can anyone here answer it? (I've made the question > > a bit wordy but the idea is simple). > > > > This idea above basically says "make it much more likely to > > kill the email if it's on more than one spam blacklist site". > > We have already established in this thread that it is probably *not* > > a good idea in general to say "if razor says it's spam with > > probability > 90% then it's spam" because razor can make mistakes, > > or perhaps be tricked into making mistakes. Indeed the _point_ of spamassassin > > is that it's giving you a whole host of other tests on top of razor. > > Similarly we should not say "if pyzor says it's spam then it's spam" > > and so on. So we are aware of the possibility that each of Razor, > > Pyzor and Dcc are capable of making mistakes. [By "mistake" I mean here > > "saying it's spam when it's not", I'm not getting into the issue > > of saying it's not spam when it is.] > [...] > > I have being using this meta rules for some time now. > > What I have seen so far (I always try to read spam reports before > deleting the spam): > - It is common for Razor to trigger on hams. I would guess that 5% to > 10%. > - Sometime pyzor trigs on ham too. I would say 2% to 5%. > - I have never seen Dcc trigger on ham, which is odd as the way Dcc > works it should give more FP than Pyzor or Razor. You aren't on enough common mailing lists, dcc hits on ham about 5% here > - Have never seen any combination of Razor, Pyzor and/or Dcc trig on > ham. > One for razor and dcc in this month's mail. > Of course, I might have being lucky so far. > > I have my treshhold (SA-2.55) on 6.0 (I intend to raise to 7 in the > future) and I filter my spam into 5 categories: > - caught_spam (>6, <8) > - low_spam (>8, <15) > - medium_spam (>15, <30) > - high_spam (>30) > > I have never got a FP on medium_spam and high_spam. > I got really a few times FP on low_spam. > Sometimes I get FP on caught_spam. > > This meta rules have help raising the spam class from (e.g low to > medium, medium to high). > > Also when this meta rules are triggered, usually this is the least > participation of the spam score. Usually it gets high bayes score, and > at least 2 RBLs. > > In the future I intend to just filter out spam based on high scores > sitewide. > > > []'s > Raul Dias > > > > ------------------------------------------------------- > This SF.Net email sponsored by: Free pre-built ASP.NET sites including > Data Reports, E-commerce, Portals, and Forums are available now. > Download today and enter to win an XBOX or Visual Studio .NET. > http://aspnet.click-url.com/go/psa00100003ave/direct;at.aspnet_072303_01/01 > _______________________________________________ > Spamassassin-talk mailing list > [EMAIL PROTECTED] > https://lists.sourceforge.net/lists/listinfo/spamassassin-talk -- Yorkshire Dave -- Scanned by MailScanner at wot.no-ip.com ------------------------------------------------------- This SF.Net email sponsored by: Free pre-built ASP.NET sites including Data Reports, E-commerce, Portals, and Forums are available now. Download today and enter to win an XBOX or Visual Studio .NET. http://aspnet.click-url.com/go/psa00100003ave/direct;at.aspnet_072303_01/01 _______________________________________________ Spamassassin-talk mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/spamassassin-talk
