How can I allow Outlook Express to send eMail through sendmail (FreeBSD 3.3) by SMTP ?
Actually, I got the following error :
The message could not be sent because one of the recipients was rejected by the server. The rejected e-mail address was 'email@example.com'. Subject 'TESTING', Account: 'mail.mydomain.com', Server: 'mail.mydomain.com', Protocol: SMTP, Server Response: '550 <firstname.lastname@example.org>... Relaying denied', Port: 25, Secure(SSL): No, Server Error: 550, Error Number: 0x800CCC79