When I send an email to a hotmail account, I get the following error: Code: The message could not be sent because one of the recipients was rejected by the server. The rejected e-mail address was '[email protected]'. Subject 'test', Account: '[email protected]', Server: 'mail.mydomain.com', Protocol: SMTP, Server Response: '554 5.7.1 <[email protected]>: Relay access denied', Port: 25, Secure(SSL): No, Server Error: 554, Error Number: 0x800CCC79