cannot send mail

[welderdude]

An unknown error has occurred. Subject 'Re: Got Your Message', Account:
'pop1.ns.sympatico.ca', Server: 'smtp1.ns.sympatico.ca', Protocol: SMTP,
Server Response: '550 Message rejected', Port: 25, Secure(SSL): No, Server
Error: 550, Error Number: 0x800CCC69

 

[t-4-2]

Check out this link : Please read carefully. Your settings are not the same
as what the link says.
http://service.sympatico.ca/index.cfm?method=content.view&content_id=1067

t-4-2