Le 13/09/2013 17:29, RW a écrit :
On Thu, 12 Sep 2013 22:09:42 +0200
Mathieu R. wrote:
22:01 root@effraie01 ~ # sa-learn --username=vmail --backup
v 3 db_version # this must be the first line!!!
v 0 num_spam
v 0 num_nonspam
sa-learn --username sets the virtual user not the unix user. (BTW
sa-learn --dump magic is a quicker way of reading the metadata)
By default SA stores the bayes database files under a user's home
directory. If you run sa-learn as vmail, which doesn't have a home
directory, it will probably just give up.
What you need to do is set bayes_path (in local.cf) to a directory to
which vmail has access, then run sa-learn as vmail. Alternately you
can
setup one of the SQL backends.
Setting bayes_path made it fall in work, thank a lot!
I'm posting this through gmane as I'm not subscribed to dovecot list.
I
replied in that SpamAssassin list before spotting that it was
cross-posted. You can ignore most of it now, but I'll quote what I
wrote about learning ham:
"I'm sceptical that the Antispam plugin can learn enough ham this
way.
As I understand it the only mail that gets learnt as ham will be
false-positives based on the overall spamassassin score,
irrespective
of the Bayes result. Bayes needs (by default) 200 spams and hams to
even start classifying and much more for optimal results - I don't
expect to get 200 FPs in the rest of my life. Unless this is high
volume server with a shared database, I'd suggest either learning a
few thousand hams manually, or implementing an unsure folder. You
can
also mitigate the problem by autotraining with a high ham
threshold,
but then you really need to be careful to move all spam to the spam
folder. "
as my english is approximative, i'm not sure to really understand what
you mean :
should i :
- do not use antispam-plugin to learn spam, but do it manually with
sa-learn /path/to/ham ?
- do not use antispam-plugin at alla ?
- use antispam-plugin to learn ham, but still do it by hand with
sa-learn /path/to/ham ?
- take care for something else ?
--
Mathieu R.
