On 4/24/2013 11:43 PM, Fred Smith wrote:
On Wed, Apr 24, 2013 at 10:15:22PM -0400, EMF wrote:
OS: CentOS 6.4 x86_64
Postfix package: postfix-2.6.6-2.2.el6_1.x86_64
Spambayes package: spambayes-1.1-0.2.a6.el6.noarch
All right, I've hit a brick wall with my integration of spambayes
and postfix. I based my build combining Jonathan St. Andre's
instructions at http://spambayes.sourceforge.net/server_side.html,
with a few tweaks from the Postfix side in
http://www.postfix.org/FILTER_README.html --- mostly because I'm
going to extend the logic.
I've successfully trained spambayes with about 12,000 each spam and
ham, creating a database in /var/spambayes/filter.db.
Running a captured message through sb_filter.py from the command
line works flawlessly:
-----------------------------------------
$ whoami
filter
$ cat /tmp/msg.7440 | /usr/bin/sb_filter.py -d /var/spambayes/filter.db -f
Return-Path: <e...@amhran.net>
Received: from amhran.net (3wg23q1.amhran.net [192.168.1.160])
by courier.amhran.net (Postfix) with ESMTP id CFF223E
for <e...@amhran.net>; Wed, 24 Apr 2013 21:28:34 -0400 (EDT)
From: "EMF" <e...@amhran.net>
To: "EMF" <e...@amhran.net>
Subject: Testing
X-Spambayes-Classification: ham; 0.17
SB Test
$
-----------------------------------------
Here are the lines from postfix's master.cf (which are very
straightforward):
-----------------------------------------
smtp inet n - n - - smtpd
-o content_filter=filter:dummy
filter unix - n n - - pipe
flags=Rq user=filter
argv=/usr/local/bin/spamfilter.sh -f ${sender} -- ${recipient}
-----------------------------------------
Spamfilter.sh sends the mail just fine if it consists of this:
-----------------------------------------
cat > /tmp/msg.$$
/usr/sbin/sendmail -i $@ < /tmp/msg.$$
-----------------------------------------
but not if it contains this:
-----------------------------------------
cat > /tmp/msg.$$
cat /tmp/msg.$$ | /usr/bin/sb_filter.py -d
/var/spambayes/filter.db -f > /tmp/new.$$
/usr/sbin/sendmail -i $@ < /tmp/new.$$
-----------------------------------------
In the latter case --- msg.$$ contains the message, but new.$$ is a
zero-length file, and thus what comes through on the far end is an
empty message. Interestingly, I get this in syslog.log:
-----------------------------------------
Apr 24 21:28:35 courier abrt: detected unhandled Python exception in
'/usr/bin/sb_filter.py'
Apr 24 21:28:35 courier abrt: can't communicate with ABRT daemon, is
it running? [Errno 13] Permission denied
-----------------------------------------
How can I capture the exception? What's being called by
sb_filter.py at the command line that isn't available when run
inside the content_filter?
Well, I'm not intimate with the innards of the spambayes components,
but if a program behaves differently on commandline than it does
in its own normal environment, I'd guess there's something different
about the system environment: PATH, LD_LIBRARY_PATH, etc., etc.,
etc.
Here's the sorted diff on "set" output, cleaned up of stuff that is
obviously extraneous like PS1. ">" is command-line, "<" is scripted
environment. The only thing that seemed like it would affect anything
was PATH, so I tried it again having duplicated the PATH into the
script; still blank message and error in syslog.
-----------------------------------------
>
BASHOPTS=cmdhist:expand_aliases:extquote:force_fignore:hostcomplete:interactive_comments:login_shell:progcomp:promptvars:sourcepath
> G_BROKEN_FILENAMES=1
> HOME=/var/spool/filter
> CVS_RSH=ssh
> LANG=en_US.UTF-8
> LESSOPEN='|/usr/bin/lesspipe.sh %s'
> LINES=24
> LOGNAME=filter
> MAIL=/var/spool/mail/filter
> MAILCHECK=60
>
PATH=/usr/lib64/qt-3.3/bin:/usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin
> PWD=/var/spool/filter
> QTDIR=/usr/lib64/qt-3.3
> QTINC=/usr/lib64/qt-3.3/include
> QTLIB=/usr/lib64/qt-3.3/lib
>
SHELLOPTS=braceexpand:hashall:histexpand:history:interactive-comments:monitor
> TERM=xterm
<
BASHOPTS=cmdhist:extquote:force_fignore:hostcomplete:interactive_comments:progcomp:promptvars:sourcepath
< LANG=C
< MAIL_CONFIG=/etc/postfix
< PATH=/usr/bin:/bin
< PWD=/tmp
< SENDMAIL='/usr/sbin/sendmail -i'
< SHELLOPTS=braceexpand:hashall:interactive-comments
< SPOOL_DIR=/tmp
< TERM=dumb
-----------------------------------------
I don't believe sb_filter.py has any calls into
_______________________________________________
SpamBayes@python.org
http://mail.python.org/mailman/listinfo/spambayes
Info/Unsubscribe: http://mail.python.org/mailman/listinfo/spambayes
Check the FAQ before asking: http://spambayes.sf.net/faq.html
