title.gettext list owners, authentication not needed (notification)

is_owner([listname],[sender])  smtp,dkim,smime,md5 -> do_it,notify
is_listmaster([sender])        smtp,dkim           -> request_auth
is_listmaster([sender])        md5,smime      -> do_it,notify
true()                         smtp,dkim,md5,smime -> reject(reason='del_owner')	

