-------- Original-Nachricht -------- > Datum: Fri, 16 Jul 2010 08:09:54 -0500 > Von: Kenneth Marshall <k...@rice.edu> > An: Mikael Bak <mik...@t-online.hu> > CC: postfix-users@postfix.org > Betreff: Re: Better spam filter for postfix
> On Fri, Jul 16, 2010 at 02:55:17PM +0200, Mikael Bak wrote: > > Steve wrote: > > [big snip] > > >> So you have made your point. You prefer (or are required) to have > user in > > >> control. > > >> > > > Yes. The big problem is that no solution out there is 100% accurate > for all users. So the only way to make the user happy is to delegate the > control to him. > > > > > > > Can't speek for all users. But I have the impression that users don't > > want to go through piles of spam and take action. They just expect the > > damn spam filter to work by itself. > > > > At least our users expect this :-) > > > > Mikael > > > Hi, > > Speaking for our environment, we use DSPAM with a pre-trained > base so that when a user starts initially, they get reasonably > good spam filter/false positive rates. This means that instead > of "piles of spam" they have just a few mistakes and the accuracy > increases quickly from there to the point that the vast majority > of users have to train perhaps a couple of messages a month. > > The initial pretraining is good enough relative to other > systems that many never train at all. Rule based filtering, > on the other hand, was very labor intensive for the users > and fraught with false-positive and negatives. As a member of > the support team, we have many fewer problems regarding spam > E-mail since we changed to DSPAM from a purely filter-based > approach. We use SpamAssassin via amavisd-new and statistical > filtering such as that provided by DSPAM, CRM114, and others > do a much better job with much less maintenance. > And if I am not wrong that you have a large DSPAM installation. Right? Could you tell us how many users you have? Is the whole university campus using DSPAM? > Cheers, > Ken > Steve -- GRATIS für alle GMX-Mitglieder: Die maxdome Movie-FLAT! Jetzt freischalten unter http://portal.gmx.net/de/go/maxdome01
