*** /usr/lib/mailman/Mailman/Handlers/CookHeaders.py.orig	2014-06-09 13:35:04.711333428 -0600
--- /usr/lib/mailman/Mailman/Handlers/CookHeaders.py	2014-06-09 14:11:22.285272752 -0600
***************
*** 118,123 ****
--- 118,125 ----
      # Do we change the from so the list takes ownership of the email
      if mm_cfg.ALLOW_FROM_IS_LIST and mlist.from_is_list:
          realname, email = parseaddr(msg['from'])
+         if realname.strip() == "":
+             realname = email.replace('@', ' AT ').replace('.', ' DOT ')
          replies = getaddresses(msg.get('reply-to', ''))
          reply_addrs = [x[1].lower() for x in replies]
          if reply_addrs: