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diff --git a/src/mailman/Bouncers/SMTP32.py b/src/mailman/Bouncers/SMTP32.py
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+# Copyright (C) 1998-2009 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)
+
+"""
+
+import re
+import email
+
+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)
+
+
+
+def process(msg):
+ mailer = msg.get('x-mailer', '')
+ if not mailer.startswith('<SMTP32 v'):
+ return
+ addrs = {}
+ for line in email.Iterators.body_line_iterator(msg):
+ if ecre.search(line):
+ break
+ mo = acre.search(line)
+ if mo:
+ addrs[mo.group('addr')] = 1
+ return addrs.keys()