On Sunday 12 February 2006 00:33, Bambero wrote:

What server side filtering gets used depends more on the delivery agent for the mail server handling the incoming messages.

That would require locking in sqwebmail to perhaps using only bogofilter (or a particular filtering engine) and require significant changes to sqwebmail.

My method depends on using maildrop (comes with courier-mta), a couple of "special" folders for retraining and a cron job to run a shell script that does the retraining. If Sam dropped the 'to "$HOME/Maildir/."' at the end of the auto created .mailfilter then I could offer sqwebmail generated filters BEFORE (override) any other filters as well.

First, I make the default delivery agent maildrop..

./courierd:DEFAULTDELIVERY="| /usr/bin/maildrop"

so any user without a .courier file will go through the global /etc/courier/maildroprc first. Adding a standard .courier file with ./Maildir disables bogofiltering.

Second, create 4 extra folders. They could be called anything but I use..

maildirmake $HOME/Maildir/.Spam maildirmake $HOME/Maildir/.Spam.ThisIsSpam maildirmake $HOME/Maildir/.Spam.ThisIsNotSpam maildirmake $HOME/Maildir/.Spam.Suspect

Third, use a global maildroprc, or users ~/.mailfilter, file to run messages through bogofilter and place them into either the Spam folder for spam, Inbox for ham or Suspect for unsure.

Fourth, users are instructed to drag incorrectly tagged ham or spam from the above 3 folders into either the ThisIsSpam or ThisIsNotSpam "special" retraining folders.

Fifth, a cron job every hour looks at those 2 folders and runs them back through bogofilter for retraining then puts any messages from ThisIsNotSpam back into the Inbox and deletes them from ThisIsSpam, after retraining.

The maildroprc is something like this and the cron update below that...

xfilter "/usr/bin/bogofilter -l -u -e -p -d $HOME/Maildir" if ((/^X-Bogosity: Spam/:h)) { to $HOME/Maildir/.Spam } if ((/^X-Bogosity: Unsure/:h)) { to $HOME/Maildir/.Spam.Suspect }

Any message that survives the above 2 rules goes into Inbox.

Get a list of users and work out the full path to their Maildir and call it MPATH (in my case). Working out the user uid/gid might be tricky when mv'ing the hams back to the users Inbox but all my users are virtual and share the same uid/gid as the mail server so I run this script as that user and don't have any permission problems.

for p in $MPATH/.Spam.{ThisIsSpam/cur,ThisIsSpam/new}; do if [ -d $p ]; then cd $p for f in $(/bin/ls -1); do /usr/bin/bogofilter -l -d$MPATH -Ns < "$f" /bin/rm $f done fi done

for p in $MPATH/.Spam.{ThisIsNotSpam/cur,ThisIsNotSpam/new}; do if [ -d $p ];then cd $p for f in $(/bin/ls -1); do /usr/bin/bogofilter -l -d$MPATH -Sn < "$f" /bin/mv $f $MPATH/cur done fi done

And there we have effective IMAP based without having to change the sqwebmail code at all... well, as mentioned, if the default "to" directive was removed from autocreated .mailfilters (from sqwebmail) then user generated filters could also work in with this scheme and even override the maildroprc default behavior.

--markc