# Copyright (C) 1998,1999,2000,2001,2002 by the Free Software Foundation, Inc. # # This program is free software; you can redistribute it and/or # modify it under the terms of the GNU General Public License # as published by the Free Software Foundation; either version 2 # of the License, or (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. """Do more detailed spam detection. This module hard codes site wide spam detection. By hacking the KNOWN_SPAMMERS variable, you can set up more regular expression matches against message headers. If spam is detected the message is discarded immediately. TBD: This needs to be made more configurable and robust. """ import re from Mailman import mm_cfg from Mailman import Errors class SpamDetected(Errors.DiscardMessage): """The message contains known spam""" def process(mlist, msg, msgdata): if msgdata.get('approved'): return for header, regex in mm_cfg.KNOWN_SPAMMERS: cre = re.compile(regex, re.IGNORECASE) value = msg[header] if not value: continue mo = cre.search(value) if mo: # we've detected spam, so throw the message away raise SpamDetected