Developers of Sympa

[Aumont - Comite Reseaux des Universites <address@concealed>]

address@concealed wrote:
> I want to enable some level of UCE/spam filtering on our lists, and
> would appreciate any wisdom or personal experience that you've had
> in employing spamassassin or similar code in a postfix environment. 
> Since procmail only touches email downstream in the selivery process, 
> it's unclear to me how to inject spamassassin in a way that integrates
> with sympa...

Here is our configuration using spamassassin with Sympa.
spamassassin must be integrated with your incomming smtp
engine in order to tag messages with X-spam-flag header.

This can be done in te mailer configuration or using aliases
filter like :

<list>: "| /usr/bin/spamc | /home/sympa/bin/queue <list>"

In addition, all send scenario is patched using
"include.send.header" feature (a file that is automatically
included at the beginning of any send scenario). This
scenario header request authentication if X-spam-flag is
detected :

~sympa/etc/scenari/include.send.header

is_subscriber(blacklist,[sender])    smtp,md5,smime -> reject
match([header->X-Spam-Flag],/yes/)   smtp -> request_auth
equal([is_bcc],'1')     smtp -> request_auth

As you see we also use a blacklist.

Serge