Hi Gordon,
I've setup courier to run perlfilter. However it doesn't seem to be getting
run.
I've ensured that /etc/courier/enablefiltering is run for both esmtp and
local (since I'm running tests on localhost). I copied the
perlfilter-example.pl to perlfilter.pl and altered that for testing.
I believe I've setup perlfilter correctly and the processes are running.
# cat /etc/courier/enablefiltering
local esmtp
# ls /etc/courier/filters/active/
perlfilter
# cat /etc/courier/filters/perlfilter
/usr/lib/courier/share/perlfilter.pl
# ls /var/spool/courier/filters/
perlfilter
# ps auwx|grep perlfilter
daemon 24829 0.0 0.0 3492 744 ? S 11:15 0:00 perlfilter
daemon 24830 0.0 0.0 5936 1856 ? S 11:15 0:00 perlfilter
daemon 24831 0.0 0.0 5936 1856 ? S 11:15 0:00 perlfilter
daemon 24832 0.0 0.0 5936 1856 ? S 11:15 0:00 perlfilter
daemon 24833 0.0 0.0 5936 1856 ? S 11:15 0:00 perlfilter
daemon 24834 0.0 0.0 5936 1856 ? S 11:15 0:00 perlfilter
daemon 25408 0.0 0.0 3492 748 ? S 11:36 0:00 perlfilter
daemon 25409 0.0 0.0 5936 1856 ? S 11:36 0:00 perlfilter
daemon 25410 0.0 0.0 5936 1856 ? S 11:36 0:00 perlfilter
daemon 25411 0.0 0.0 5936 1856 ? S 11:36 0:00 perlfilter
daemon 25412 0.0 0.0 5936 1856 ? S 11:36 0:00 perlfilter
daemon 25413 0.0 0.0 5936 1856 ? S 11:36 0:00 perlfilter
And, just as a test I've altered perlfilter.pl such that it will reject all
messages in the filterdata sub, by returning "500 Invalid Date header"
regardless of the content.
But if I send a message to myself (locally on the server via pine), the
message is accepted and goes through.
What am I missing?
Thanks for your help
Ricardo
----- Original Message -----
From: "Gordon Messmer" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Saturday, March 18, 2006 9:55 AM
Subject: Re: [courier-users] verify envelope sender?
Ricardo Kleemann wrote:
I'm somewhat confused as to how exactly this works and should work. I
have
an /etc/courier/maildroprc which runs some checks and may return an
error.
For example, I have this:
if ($RECIPIENT =~ /321.net$/)
{
STAT=`/usr/local/bin/check_config $RECIPIENT`
if ($STAT =~ /^Error:/)
{
echo "550 $STAT"
EXITCODE=77
exit
}
}
Don't do that in maildroprc. Once you've accepted mail (via smtp), it's
your responsibility to make sure that it's delivered. By accepting the
mail, you're promising the sender that you'll handle all further
processing.
If you have a set of conditions under which you will refuse to process
mail, the best place to process them is in a global mail filter (see the
man page for courierfilter). In addition to the example filters included
with Courier, there are frameworks available in Perl and Python (I wrote
the one Python framework). If you refuse a message via a global mail
filter, the message won't be accepted by Courier's SMTPd, and the sending
MTA will generate its own DSN for the sender. You won't get any from your
own system.
Additionally each user has a .mailfilter file which may also output an
error
(for example if a virus is found). In all cases, I'm asserting
EXITCODE=77,
and print out an error message.
Do that in a global filter, too. There are a couple of ways to get clamav
hooked up to a global mail filter. There's a dedicated daemon written in
C, and a filter in the pythonfilter package.
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