If you experience mails to a couriermlm list bouncing with the error “511 Headers specify no receipients” you most probably have forgotten to provide a proper list email adress in listdir/options (ADRESS=...).
If you experience mails to a couriermlm list bouncing with the error “511 Headers specify no receipients” you most probably have forgotten to provide a proper list email adress in listdir/options (ADRESS=...).