This is a hack usable only if you want
a moderated umbrella list of moderated lists.

Set anonymous_list to Yes for umbrella list and allow posts
from umbrella list to be accepted by sublists without moderation.

This patch makes possible to reply to original poster instead of umbrella list.

--- mailman-2.1.9/Mailman/Handlers/Cleanse.py~	2006-01-15 22:01:35.000000000 +0100
+++ mailman-2.1.9/Mailman/Handlers/Cleanse.py	2008-04-16 16:28:46.000000000 +0200
@@ -34,16 +34,17 @@
     del msg['urgent']
     # We remove other headers from anonymous lists
     if mlist.anonymous_list:
-        syslog('post', 'post to %s from %s anonymized',
+        syslog('post', 'post to %s from %s anonymizored',
                mlist.internal_name(), msg.get('from'))
+        del msg['reply-to']
+        msg['Reply-To'] = msg.get('from')
         del msg['from']
-        del msg['reply-to']
         del msg['sender']
         # Hotmail sets this one
         del msg['x-originating-email']
         i18ndesc = str(uheader(mlist, mlist.description, 'From'))
         msg['From'] = formataddr((i18ndesc, mlist.GetListEmail()))
-        msg['Reply-To'] = mlist.GetListEmail()
+        # msg['Reply-To'] = mlist.GetListEmail()
     # Some headers can be used to fish for membership
     del msg['return-receipt-to']
     del msg['disposition-notification-to']