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diff --git a/src/mailman/core/tests/test_pipelines.py b/src/mailman/core/tests/test_pipelines.py
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+++ b/src/mailman/core/tests/test_pipelines.py
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+# Copyright (C) 2012 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/>.
+
+"""Test the core modification pipelines."""
+
+from __future__ import absolute_import, print_function, unicode_literals
+
+__metaclass__ = type
+__all__ = [
+    ]
+
+
+import unittest
+
+
+from mailman.app.lifecycle import create_list
+from mailman.core.pipelines import process
+from mailman.testing.helpers import (
+    reset_the_world,
+    specialized_message_from_string as mfs)
+from mailman.testing.layers import ConfigLayer
+
+
+
+class TestBuiltinPipeline(unittest.TestCase):
+    """Test various aspects of the built-in pipeline."""
+
+    layer = ConfigLayer
+
+    def setUp(self):
+        self._mlist = create_list('test@example.com')
+
+    def tearDown(self):
+        reset_the_world()
+
+    def test_rfc2369_headers(self):
+        # Ensure that RFC 2369 List-* headers are added.
+        msg = mfs("""\
+From: Anne Person <anne@example.org>
+To: test@example.com
+Subject: a test
+
+testing
+""")
+        msgdata = {}
+        process(self._mlist, msg, msgdata, pipeline_name='built-in')
+        self.assertEqual(msg['list-id'], '<test.example.com>')
+        self.assertEqual(msg['list-post'], '<mailto:test@example.com>')