personally, attended sa-learn is better for me rather than having 1 with unattended auto learn, as what they always say, one man's spam is another man's ham.
2 cents here. -----Original Message----- From: Jim Maul [mailto:[EMAIL PROTECTED] Sent: Friday, December 29, 2006 6:28 PM To: users@spamassassin.apache.org Subject: Re: sa-learn explained Dave Koontz wrote: > > I guess milage varies. Auto-Learn has been a life saver for us and > has drastically reduced false postives we used to get with emails to > our College's Health Care & Research departments. We pass all local > user email through SA as well, so this really helps the system learn what is > 'good' > email. > > I'd suggest that everyone should at least try it and monitor the results. > > I have found autolearn to be quite a valuable function here as well. Keep in mind that i have adjusted the autolearn threshold values to prevent things from being autolearned incorrectly. I would suggest others do the same if they use autolearn. IMO, with the default scores, it is too easy for false learning to occur. I use: bayes_auto_learn_threshold_nonspam -0.1 bayes_auto_learn_threshold_spam 10.0 -Jim > -----Original Message----- > From: Nigel Frankcom [mailto:[EMAIL PROTECTED] > Sent: Friday, December 29, 2006 11:17 AM > To: users@spamassassin.apache.org > Subject: Re: sa-learn explained > > On Fri, 29 Dec 2006 09:51:05 -0500, Andy Figueroa > <[EMAIL PROTECTED]> wrote: > >> I still fee like a tyro with SpamAssassin, but my installation is >> catching better than 99% with perhaps 0.1% false positives (thanks in >> large part to things I've learned from this list), and I think I can >> tell you a couple of things better than just read the manual. (But, >> do read the manual!) My initial experience with SpamAssassin about a >> year ago was through a large web hosting company and I was limited to >> playing with SpamAssassin through cpanel, though till they moved >> SpamAssassin to its own server, I could also edit my own user >> preferences directly. The problem was, this big company never could >> get it right, so now I'm running my own mailserver(s) out of what >> seemed like necessity. I'm running Gentoo with SA 3.1.7. >> >> sa-learn is used to train and keep up-to-date the bayesian database. >> So, turn on autolearn in your /etc/mail/spamassassin/local.cf so the >> line reads: >> bayes_auto_learn 1 >> (should be on by default). >> This will cause selected spam and ham that you get to be used >> automagically to keep the bayesian database up-to-date. >> >> I'm using maildir and have two subdirectories in my .maildir called: >> 2-learn-spam >> 2-learn-ham >> >> I put missed spam in 2-learn-spam and ham misclassified as ham in >> 2-learn-ham. Then, whenever I have a few messages in one of those >> directories, I run one of the following scripts: >> >> learnspam.scr, which contains this line: >> sa-learn --spam --progress /home/figueroa/.maildir/.2-learn-spam/cur >> >> learnham.scr which contains this line: >> sa-learn --ham --progress /home/figueroa/.maildir/.2-learn-ham/cur >> >> This is on my personal mailserver. On the mailserver I run at a >> school, I run that script on each users 2-learn-spam/ham directories >> every night under crontab. >> >> Run an up-to-date version of SpmaAsssasin. I was having pretty good >> results with 3.1.3 (the unmasked version in Gentoo), but got >> immediately better results when I upgraded to the current version. >> >> Also, to keep your RULES up-to-date, run sa-update as root from >> time-to-time. >> >> Good luck! Happy spamassassaning! > > > Personally, I'd disagree with auto-learn; having used SA in a > production environment for some years I've found manual training to be > a better solution. > > YMMV > > Just my 2 (pick your currency) worth. > > Nigel > > > >
