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'Release_2_1-maint'.

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diff --git a/Mailman/Bouncers/Qmail.py b/Mailman/Bouncers/Qmail.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.
+
+"""Parse bounce messages generated by qmail.
+
+Qmail actually has a standard, called QSBMF (qmail-send bounce message
+format), as described in
+
+    http://cr.yp.to/proto/qsbmf.txt
+
+This module should be conformant.
+
+"""
+
+import re
+import email.Iterators
+
+introtag = 'Hi. This is the'
+acre = re.compile(r'<(?P<addr>[^>]*)>:')
+
+
+
+def process(msg):
+    addrs = []
+    # simple state machine
+    #    0 = nothing seen yet
+    #    1 = intro paragraph seen
+    #    2 = recip paragraphs seen
+    state = 0
+    for line in email.Iterators.body_line_iterator(msg):
+        line = line.strip()
+        if state == 0 and line.startswith(introtag):
+            state = 1
+        elif state == 1 and not line:
+            # Looking for the end of the intro paragraph
+            state = 2
+        elif state == 2:
+            if line.startswith('-'):
+                # We're looking at the break paragraph, so we're done
+                break
+            # At this point we know we must be looking at a recipient
+            # paragraph
+            mo = acre.match(line)
+            if mo:
+                addrs.append(mo.group('addr'))
+            # Otherwise, it must be a continuation line, so just ignore it
+        # Not looking at anything in particular
+    return addrs