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diff --git a/mailman/chains/builtin.py b/mailman/chains/builtin.py
new file mode 100644
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+++ b/mailman/chains/builtin.py
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+# Copyright (C) 2007-2008 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+# USA.
+
+"""The default built-in starting chain."""
+
+__all__ = ['BuiltInChain']
+__metaclass__ = type
+
+
+import logging
+
+from zope.interface import implements
+
+from mailman.chains.base import Link
+from mailman.configuration import config
+from mailman.i18n import _
+from mailman.interfaces import IChain, LinkAction
+
+
+log = logging.getLogger('mailman.vette')
+
+
+
+class BuiltInChain:
+    """Default built-in chain."""
+
+    implements(IChain)
+
+    name = 'built-in'
+    description = _('The built-in moderation chain.')
+
+    _link_descriptions = (
+        ('approved', LinkAction.jump, 'accept'),
+        ('emergency', LinkAction.jump, 'hold'),
+        ('loop', LinkAction.jump, 'discard'),
+        # Do all of the following before deciding whether to hold the message
+        # for moderation.
+        ('administrivia', LinkAction.defer, None),
+        ('implicit-dest', LinkAction.defer, None),
+        ('max-recipients', LinkAction.defer, None),
+        ('max-size', LinkAction.defer, None),
+        ('news-moderation', LinkAction.defer, None),
+        ('no-subject', LinkAction.defer, None),
+        ('suspicious-header', LinkAction.defer, None),
+        # Now if any of the above hit, jump to the hold chain.
+        ('any', LinkAction.jump, 'hold'),
+        # Take a detour through the self header matching chain, which we'll
+        # create later.
+        ('truth', LinkAction.detour, 'header-match'),
+        # Finally, the builtin chain selfs to acceptance.
+        ('truth', LinkAction.jump, 'accept'),
+        )
+
+    def __init__(self):
+        self._cached_links = None
+
+    def get_links(self, mlist, msg, msgdata):
+        """See `IChain`."""
+        if self._cached_links is None:
+            self._cached_links = links = []
+            for rule_name, action, chain_name in self._link_descriptions:
+                # Get the named rule.
+                rule = config.rules[rule_name]
+                # Get the chain, if one is defined.
+                if chain_name is None:
+                    chain = None
+                else:
+                    chain = config.chains[chain_name]
+                links.append(Link(rule, action, chain))
+        return iter(self._cached_links)