The message could not be sent because the server rejected the sender's e-mail address.

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Posted June 20, 201410 yr

My father using outlook express, XP has got this message with no apparent changes to things. Can anyone help?

" The message could not be sent because the server rejected the sender's e-mail address. The sender's e-mail address was 'father's email address'. Subject 'test', Account: 'pop.tools.sky.com', Server: 'smtp.tools.sky.com', Protocol: SMTP, Server Response: '530 5.7.1 Authentication required', Port: 465, Secure(SSL): Yes, Server Error: 530, Error Number: 0x800CCC78 "

Thanks,

Chris

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