The message could not be sent. The authentication setting might not be correct for your outgoing e-mail [SMTP] server. For help solving this problem, go to Help, search for "Troubleshoot Windows Mail", and read the "I'm having problems sending e-mail" section. If you need help determining the proper server settings, please contact your e-mail service provider.
The rejected e-mail address was 'email@example.com'. Subject 'Re: hi', Account: 'pop3.mweb.co.za', Server: 'smtp.vodacom.co.za', Protocol: SMTP, Server Response: '554 5.7.1 <firstname.lastname@example.org>: Recipient address
rejected: Access denied', Port: 25, Secure(SSL): No, Server Error: 554, Error Number: 0x800CCC79