Re: spamassassin and exim in woody

[Rory Campbell-Lange <rory@campbell-lange.net>]

You can integrate spamassassin in two ways, through calling it through
procmail or by directly integrating it into Exim.

The former is a bit easier to setup, and suitable for single-user
machines.

The latter is a bit more complex to setup, but provides a single point
of configuration. Essentially you will pipe incoming messages to the
spamc daemon and then resubmit them to exim to reinject them into the
pool. A system filter will allow you to do something sensible with
messages submitted from spamc depending on their status.

I use the second configuration to provide a pass-thru host filtering
mail aimed at a corporate Exchange server. Here are some details, which
are additional items to add, if you are brave!, to your exim.conf file.

**** Main

In the top (Main Configuration) section of the configuration file I
have:
    message_filter = /etc/exim/spam_header_rewrite.filter

The filter file contents:
if first_delivery and
   $h_X-Spam-Flag: contains "YES"
then
   logfile /var/log/exim/spamlog
   logwrite "$tod_log From: $h_From: Subject: $h_Subject: \n \t X-Spam-Status: $h_X-Spam-Status: Sender: $sender_address"
   deliver spam@my.domain
   seen finish
endif

**** Transports

You may want to do a shadow delivery of mail to a backup area while you
are testing:

shadow_delivery:
  driver = appendfile
  group = mail
  user = mail
  mode = 0660
  envelope_to_add = true
  directory=/home/mailbackup
  maildir_format

pipe_to_scanner:
        # from
        # http://dman.ddts.net/~dman/config_docs/exim3_spamassassin.html
        driver = pipe
        command = /usr/sbin/exim -oMr scanned-ok -bS
        transport_filter = /usr/bin/spamc
        bsmtp = all
        # the user and group  mail  have read/write access to this
        # folder
        home_directory = "/tmp"
        current_directory = "/tmp"
        # must use a privileged user to set $received_protocol on the
        # way back in!
        user = mail
        group = mail
        return_path_add = false
        log_output = true
        return_fail_output = true
        prefix =
        suffix =
        shadow_transport = shadow_delivery

*** Routers

spamcheck_router:
        driver = domainlist
        condition = ${if eq {$received_protocol}{scanned-ok}{no}{yes}}
        transport = pipe_to_scanner
        route_list = my.domain


On 19/03/03, Phil Reynolds (phil@tinsleyviaduct.com) wrote:
> My mail system runs exim and I am wanting to integrate spamassassin
> into it too.
> 
> I am not sure of the best way to do this, and would appreciate some
> assistance with the configuration.
> 
> I am using the versions of both packages contained in woody.

Rory

-- 
Rory Campbell-Lange 
<rory@campbell-lange.net>
<www.campbell-lange.net>