Re: Promoting your website with bulk-email

[Benoît SIBAUD]

Hi,
Another possibility: in my experience bogofilter seems to work
better when it has seen very much more non-spam than spam
e-mail.  As I recall your data set was about evenly split
between the two.
My own data about Bogofilter (part of a French text available at 
http://oumph.free.fr/textes/penibles_du_net.html#pourriel , written in 
June):

* initial learning
my email boxes for 21 month:
40839 ham
 2231 spam (5%)
-----
43060 mails (more than 300 MiB)
17.6 MiB goodlist.db (ham database)
 3.0 MiB spamlist.db (spam database)
* 22 days later:
 559 new spams (19%)
       90 false negative
      469 detected spam
  49 virus/worm/trojan (1,7%) [*]
2327 ham (79%)
        0 false positive
     2327 detected ham
----
2935 mails
19.0 MiB goodlist.db
 3.9 MiB spamlist.db
procmail+bogofilter looks good: good success rate and no (or few) false 
positives.

[*] mainly a rule to detect PE executables in attachments
--
Beno�t Sibaud