[Exim] Exim, virtual domains and selective filtering

Startseite
Nachricht löschen
Nachricht beantworten
Autor: Kyle Downey
Datum:  
To: exim-users
Betreff: [Exim] Exim, virtual domains and selective filtering
I use Courier-IMAP and LDAP to provide virtual e-mail accounts: users
do not have home directories; there is a
/var/imap/${domain}/${user}/Maildir directory instead. I've gotten
everything running, and recently added amavisd-new, ClamAV and
SpamAssassin.

What I'd like to do is provide a system-wide rule that will relay
virus-infected messages and suspected spam to a particular Maildir for
each user.

Searching around I've found ways to do this with maildrop, procmail,
other MTAs, etc., and ways for Exim that would work if there were a
valid $home (like writing an Exim filter in .forward or a system filter
that delivers to $home/Maildir/.Junk or the like). Unfortunately I
haven't found anything on doing this with virtual domains, where the
"home directory" is itself conditional on properties of the incoming
message.

What I'd like is somehow add a rule to my LDAP user transport that
says "if there's an X-Spam-Status = YES or if the subject starts with
VIRUS (is there a mail header for ClamAV+amavis I can use instead?)
deliver to

/var/imap/${lc:$domain}/${lc:$local_part}/Maildir/.Junk

instead of

/var/imap/${lc:$domain}/${lc:$local_part}/Maildir

which is the regular place. What's the best tool in the exim4 kit for
such a thing?

--kd