Sorry if you get multiples, like it says, having trouble with outgoing. Thanks. -----Original Message----- From: Jim & Toni [mailto:jntdibb@bellatlantic.net] Sent: Monday, October 13, 2003 2:28 PM To: 'wlug@wlug.org' Subject: Authentication on outgoing SMTP, how to set with postfix? I've almost got postfix setup as a mail relay from my local linux box to 'outgoing.verizon.net'. But, the postfix howto doesn't specify how to provide login/password authentication for smtp servers that require it. The error was '554: Authentication required' Going to search more, but appreciate any help. Thanks.