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diff --git a/src/mailman/bouncers/yale.py b/src/mailman/bouncers/yale.py
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-# Copyright (C) 2000-2011 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/>.
-
-"""Yale's mail server is pretty dumb.
-
-Its reports include the end user's name, but not the full domain. I think we
-can usually guess it right anyway. This is completely based on examination of
-the corpse, and is subject to failure whenever Yale even slightly changes
-their MTA. :(
-
-"""
-
-from __future__ import absolute_import, unicode_literals
-
-__metaclass__ = type
-__all__ = [
- 'Yale',
- ]
-
-
-import re
-
-from cStringIO import StringIO
-from email.utils import getaddresses
-from flufl.enum import Enum
-from zope.interface import implements
-
-from mailman.interfaces.bounce import IBounceDetector
-
-
-scre = re.compile(r'Message not delivered to the following', re.IGNORECASE)
-ecre = re.compile(r'Error Detail', re.IGNORECASE)
-acre = re.compile(r'\s+(?P<addr>\S+)\s+')
-
-
-class ParseState(Enum):
- start = 0
- intro_found = 1
-
-
-
-class Yale:
- """Parse Yale's bounces (or what used to be)."""
-
- implements(IBounceDetector)
-
- def process(self, msg):
- """See `IBounceDetector`."""
- if msg.is_multipart():
- return set()
- try:
- whofrom = getaddresses([msg.get('from', '')])[0][1]
- if not whofrom:
- return set()
- username, domain = whofrom.split('@', 1)
- except (IndexError, ValueError):
- return set()
- if username.lower() != 'mailer-daemon':
- return set()
- parts = domain.split('.')
- parts.reverse()
- for part1, part2 in zip(parts, ('edu', 'yale')):
- if part1 != part2:
- return set()
- # Okay, we've established that the bounce came from the mailer-daemon
- # at yale.edu. Let's look for a name, and then guess the relevant
- # domains.
- names = set()
- body = StringIO(msg.get_payload())
- state = ParseState.start
- for line in body:
- if state is ParseState.start and scre.search(line):
- state = ParseState.intro_found
- elif state is ParseState.intro_found and ecre.search(line):
- break
- elif state is ParseState.intro_found:
- mo = acre.search(line)
- if mo:
- names.add(mo.group('addr'))
- # Now we have a bunch of names, these are either @yale.edu or
- # @cs.yale.edu. Add them both.
- addresses = set()
- for name in names:
- addresses.add(name + '@yale.edu')
- addresses.add(name + '@cs.yale.edu')
- return addresses