I have just installed spamassassin 2.31 in my postfix MTA server.
At first, I would like to test it just in my email account before
I configured just as in the INSTALL file:
"|IFS=' ' && exec /usr/bin/procmail -f- || exit 75 #user"
But the spams get trought it untouched. When I run it by the hand:
cat sample-spam.txt | /usr/bin/spamassassin -c
it does tag it as spam and send me the email.

from localhost (localhost [127.0.0.1])
	by phobos.labs.netnoteinc.com (Postfix) with ESMTP id 0CE2E4415F
	for <zzzz@localhost>; Mon,  2 Sep 2002 11:21:42 -0400 (EDT)
from phobos [127.0.0.1]
	by localhost with IMAP (fetchmail-5.9.0)
	for zzzz@localhost (single-drop); Mon, 02 Sep 2002 16:21:42 +0100 (IST)
from lugh.tuatha.org (root@lugh.tuatha.org [194.125.145.45]) by
    dogma.slashnull.org (8.11.6/8.11.6) with ESMTP id g82ExkZ05649 for
    <zzzz-ilug@example.com>; Mon, 2 Sep 2002 15:59:46 +0100
from lugh (root@localhost [127.0.0.1]) by lugh.tuatha.org
    (8.9.3/8.9.3) with ESMTP id PAA11015; Mon, 2 Sep 2002 15:59:18 +0100
from ie.suberic.net (owsla.ie.suberic.net [62.17.162.83]) by
    lugh.tuatha.org (8.9.3/8.9.3) with ESMTP id PAA10975 for <ilug@linux.ie>;
    Mon, 2 Sep 2002 15:58:55 +0100
lugh.tuatha.org: Host owsla.ie.suberic.net
    [62.17.162.83] claimed to be ie.suberic.net
from owsla.ie.suberic.net (owsla [127.0.0.1]) by ie.suberic.net
    (8.11.6/8.11.6) with ESMTP id g82EwrY22553 for <ilug@linux.ie>;
    Mon, 2 Sep 2002 15:58:53 +0100
From ilug-admin@linux.ie  Mon Sep  2 16:22:06 2002

ok, so if i was in the uk for a wekk, how might i configure my laptop to
dial in to a freebie isp?  redhat's internet connection wizard actually
has settings for uk isp's, but freeserve is the only one i recognize
kevin@suberic.net     that a believer is happier than a skeptic is no more to
fork()'ed on 37058400    the point than the fact that a drunken man is happier
meatspace place: home       than a sober one. the happiness of credulity is a
http://ie.suberic.net/~kevin   cheap & dangerous quality -- g.b. shaw