Hello everybody,
Please excuse my probably rather novice question but I couldn't find any hint
on this. The document at http://www.postfix.org/SMTPD_PROXY_README.html says it
should be possible to reject an email with a before-queue content filter ...
but how would I exactly accomplish this?
What I want to do is reject what spamassassin considers spam (ok, I know the
cons, but I really want to do it this way), so what I have in my master.cf is:
smtp inet n - n - - smtpd
-o content_filter=spamfilter:dummy
spamfilter unix - n n - - pipe
flags=Rq user=spamfilter argv=/.../spamfilter -f ${sender} -- ${recipient}
And in spamfilter I have this:
#!/bin/bash
/usr/bin/spamc | /usr/lib/sendmail -i "$@"
exit $?
So how would I have to change my spamfilter in order to have Postfix reject
what spamassassin considers spam? A header check on /X-Spam-Level: \*{5,}/ does
not work; as in this step Postfix has already accepted the email; it would
generate backscatter instead, not what I want...
Thanks a lot for some advice!
