The message could not be sent.

[zozo]

-- 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 '(e-mail address removed)'. Subject 'Re
Nokia N97', Account: 'mail.optusnet.com.au', Server: 'mail.optusnet.com.au',
Protocol: SMTP, Server Response: '553 5.3.0 <[email protected]>...
No such user', Port: 25, Secure(SSL): No, Server Error: 553, Error Number:
0x800CCC79

 

[PA Bear [MS MVP]]

Have you ever been able to Send using those settings?

 

[Gary VanderMolen \(MVP\)]

The error message is correct. There is no person with the email address
(e-mail address removed).

Are you able to send to other recipients including yourself?