The SmartList FAQ says about using the Postfix MTA: "For large lists it may be advantageous to replace choplist with the direct sendmail wrapper call because postfix doesn't need a helper program for the load balancing." So how do I do that exactly? rc.init simply says: #alt_sendmail # uncomment if you'd prefer sendmail # to handle the $listdist expansion But when I uncomment this delivery to the list fails with an error message from Postfix: <test-dist@lab.applinet.nl>: unknown user: "test-dist" What's the right way to let Postfix do the load balancing itself? Regards, René Pijlman