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diff --git a/Mailman/Handlers/SpamDetect.py b/Mailman/Handlers/SpamDetect.py
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+# 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