[sclug] How to stop checking for spam on mailing list posts

[Tom Chance]

Ahoy,

I'm a bit fed up of the system load imposed by SpamAssassin, and it's a bit 
annoying having it check every single mail including those going to mailing 
lists. I can't remember a single item of spam hitting a list I'm currently 
subscribed to, so I'd like to reconfigure my server to leave those be and 
save my VM some effort.

At the moment I have these two lines in /etc/postfix/master.cf:

smtp      inet  n       -       -       -       -       smtpd
        -o content_filter=spamassassin

spamassassin unix -     n       n       -       -       pipe
        flags=Rq user=spamfilter argv=/usr/bin/spamc -f -e
        /usr/sbin/sendmail -oi -f ${sender} ${recipient}


I thought that I might change the ~/.mailfilter files to send non-list email 
to SA, and remove the relevant lines from the Postfix conf.

I've not yet cooked up a recipe to do this, so I'd be grateful for any 
suggestions and advise before I go and spend time trying to make it work :)

Regards,
Tom

-- 
The task of critique is not to denounce the ideals, but to show their 
transformation into ideologies, and to challenge the ideology in the 
name of the betrayed ideal (Fromm ? Beyond The Chains Of Illusion)