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diff --git a/src/mailman/chains/tests/test_dmarc.py b/src/mailman/chains/tests/test_dmarc.py
new file mode 100644
index 000000000..8d0072254
--- /dev/null
+++ b/src/mailman/chains/tests/test_dmarc.py
@@ -0,0 +1,82 @@
+# Copyright (C) 2017 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 for the DMARC chain."""
+
+import unittest
+
+from mailman.app.lifecycle import create_list
+from mailman.core.chains import process as process_chain
+from mailman.interfaces.chain import DiscardEvent, RejectEvent
+from mailman.testing.helpers import (
+    event_subscribers, get_queue_messages,
+    specialized_message_from_string as mfs)
+from mailman.testing.layers import ConfigLayer
+
+
+class TestDMARC(unittest.TestCase):
+    layer = ConfigLayer
+    maxDiff = None
+
+    def setUp(self):
+        self._mlist = create_list('ant@example.com')
+        self._msg = mfs("""\
+From: anne@example.com
+To: test@example.com
+Subject: Ignore
+
+""")
+
+    def test_discard(self):
+        msgdata = dict(dmarc_action='discard')
+        # When a message is discarded, the only artifacts are a log message
+        # and an event.  Catch the event to prove it happened.
+        events = []
+        def handler(event):                         # noqa: E306
+            if isinstance(event, DiscardEvent):
+                events.append(event)
+        with event_subscribers(handler):
+            process_chain(self._mlist, self._msg, msgdata, start_chain='dmarc')
+        self.assertEqual(len(events), 1)
+        self.assertIs(events[0].msg, self._msg)
+
+    def test_reject(self):
+        msgdata = dict(
+            dmarc_action='reject',
+            moderation_reasons=['DMARC violation'],
+            )
+        # When a message is reject, an event will be triggered and the message
+        # will be bounced.
+        events = []
+        def handler(event):                         # noqa: E306
+            if isinstance(event, RejectEvent):
+                events.append(event)
+        with event_subscribers(handler):
+            process_chain(self._mlist, self._msg, msgdata, start_chain='dmarc')
+        self.assertEqual(len(events), 1)
+        self.assertIs(events[0].msg, self._msg)
+        items = get_queue_messages('virgin', expected_count=1)
+        # Unpack the rejection message.
+        rejection = items[0].msg.get_payload(0).get_payload()
+        self.assertEqual(rejection, """\
+Your message to the Ant mailing-list was rejected for the following
+reasons:
+
+DMARC violation
+
+The original message as received by Mailman is attached.
+""")