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# Copyright (C) 1998-2011 by the Free Software Foundation, Inc.
#
# This file is part of GNU Mailman.
#
# GNU Mailman 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 3 of the License, or (at your option)
# any later version.
#
# GNU Mailman 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
# GNU Mailman. If not, see <http://www.gnu.org/licenses/>.
"""Something which claims
X-Mailer: <SMTP32 vXXXXXX>
What the heck is this thing? Here's a recent host:
% telnet 207.51.255.218 smtp
Trying 207.51.255.218...
Connected to 207.51.255.218.
Escape character is '^]'.
220 X1 NT-ESMTP Server 208.24.118.205 (IMail 6.00 45595-15)
"""
from __future__ import absolute_import, unicode_literals
__metaclass__ = type
__all__ = [
'SMTP32',
]
import re
from email.iterators import body_line_iterator
from zope.interface import implements
from mailman.interfaces.bounce import IBounceDetector
ecre = re.compile('original message follows', re.IGNORECASE)
acre = re.compile(r'''
( # several different prefixes
user\ mailbox[^:]*: # have been spotted in the
|delivery\ failed[^:]*: # wild...
|unknown\ user[^:]*:
|undeliverable\ +to
|delivery\ userid[^:]*:
)
\s* # space separator
(?P<addr>[^\s]*) # and finally, the address
''', re.IGNORECASE | re.VERBOSE)
class SMTP32:
"""Something which claims
X-Mailer: <SMTP32 vXXXXXX>
"""
implements(IBounceDetector)
def process(self, msg):
mailer = msg.get('x-mailer', '')
if not mailer.startswith('<SMTP32 v'):
return None
addrs = set()
for line in body_line_iterator(msg):
if ecre.search(line):
break
mo = acre.search(line)
if mo:
addrs.add(mo.group('addr'))
return list(addrs)
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