DandelionNStuff/pymilter
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Use re for auto-reply recognition.

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This commit is contained in:
Stuart Gathman
2007-02-07 23:21:26 +00:00
parent c9e6bb68d9
commit 20612240f3
2 changed files with 21 additions and 5 deletions
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TODO
+3
View File
@@ -1,3 +1,6 @@
rcpt-addr may let us know when a recipient is unknown. That should count
against reputation.
Need to use wildcards in blacklist.log: *.madcowsrecord.net Need to use wildcards in blacklist.log: *.madcowsrecord.net
Need to exclude emails like !*-admin@example.com in whitelist_sender. Need to exclude emails like !*-admin@example.com in whitelist_sender.
Need to exclude robot users from autowhitelist. Don't want to have to Need to exclude robot users from autowhitelist. Don't want to have to
bms.py
+18 -5
View File
@@ -1,6 +1,9 @@
#!/usr/bin/env python #!/usr/bin/env python
# A simple milter that has grown quite a bit. # A simple milter that has grown quite a bit.
# $Log$ # $Log$
# Revision 1.92 2007/01/26 03:47:23 customdesigned
# Handle null in header value.
#
# Revision 1.91 2007/01/25 22:47:25 customdesigned # Revision 1.91 2007/01/25 22:47:25 customdesigned
# Persist blacklisting from delayed DSNs. # Persist blacklisting from delayed DSNs.
# #
@@ -124,7 +127,7 @@ except: spf = None
# Sometimes, MTAs reply to our DSN. We recognize this type of reply/DSN # Sometimes, MTAs reply to our DSN. We recognize this type of reply/DSN
# and check for the original recipient SRS encoded in Message-ID. # and check for the original recipient SRS encoded in Message-ID.
# If found, we blacklist that recipient. # If found, we blacklist that recipient.
subjpats = ( _subjpats = (
r'^failure notice', r'^failure notice',
r'^subjectbounce', r'^subjectbounce',
r'^returned mail', r'^returned mail',
@@ -138,7 +141,19 @@ subjpats = (
r'^fallo en la entrega', r'^fallo en la entrega',
r'\bfehlgeschlagen\b' r'\bfehlgeschlagen\b'
) )
refaildsn = re.compile('|'.join(subjpats),re.IGNORECASE) refaildsn = re.compile('|'.join(_subjpats),re.IGNORECASE)
# We don't want to whitelist recipients of Autoreplys and other robots.
# There doesn't seem to be a foolproof way to recognize these, so
# we use this heuristic. The worst that can happen is someone won't get
# whitelisted when they should, or we'll whitelist some spammer for a while.
_autopats = (
r'^read:',
r'\bautoreply:\b',
r'^return receipt',
r'^Your message\b.*\bawaits moderator approval'
)
reautoreply = re.compile('|'.join(_autopats),re.IGNORECASE)
import logging import logging
# Thanks to Chris Liechti for config parsing suggestions # Thanks to Chris Liechti for config parsing suggestions
@@ -1060,9 +1075,7 @@ class bmsMilter(Milter.Milter):
return rc return rc
elif self.whitelist_sender and lname == 'subject': elif self.whitelist_sender and lname == 'subject':
# check for AutoReplys # check for AutoReplys
vl = val.lower() if reautoreply.match(val):
if vl.startswith('read:') \
or vl.find('autoreply:') >= 0 or vl.startswith('return receipt'):
self.whitelist_sender = False self.whitelist_sender = False
self.log('AUTOREPLY: not whitelisted') self.log('AUTOREPLY: not whitelisted')