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diff --git a/Mailman/Handlers/CalcRecips.py b/Mailman/Handlers/CalcRecips.py
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+++ b/Mailman/Handlers/CalcRecips.py
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+# Copyright (C) 1998 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.
+
+"""Calculate the regular (i.e. non-digest) recipients of the message.
+
+This module calculates the non-digest recipients for the message based on the
+list's membership and configuration options.  It places the list of recipients
+on the `recips' attribute of the message.  This attribute is used by the
+SendmailDeliver and BulkDeliver modules.
+
+"""
+
+from Mailman import mm_cfg
+
+
+
+def process(mlist, msg):
+    dont_send_to_sender = 0
+    # Get the membership address of the sender, if a member.  Then get the
+    # sender's receive-own-posts option
+    sender = mlist.FindUser(msg.GetSender())
+    if sender:
+        if mlist.GetUserOption(sender, mm_cfg.DontReceiveOwnPosts):
+            dont_send_to_sender = 1
+        if mlist.GetUserOption(sender, mm_cfg.AcknowlegePosts):
+            ack_post = 1
+    # calculate the regular recipients of the message
+    members = mlist.GetDeliveryMembers()
+    recips = []
+    for m in members:
+        if not mlist.GetUserOption(m, mm_cfg.DisableDelivery):
+            recips.append(m)
+    # remove the sender if they don't want to receive
+    if dont_send_to_sender:
+        try:
+            recips.remove(mlist.GetUserSubscribedAddress(sender))
+        except ValueError:
+            # sender does not want to get copies of their own messages
+            # (not metoo), but delivery to their address is disabled (nomail)
+            pass
+    # bookkeeping
+    msg.recips = recips