windows outlook express 6

Hello, I never used this account but want to use it now and tried everything to send emails and I can't. I keep on getting this and many like it,,,

Account: '', Server: '', Protocol: POP3, Server Response: '-ERR [AUTH] Authentication failed', Port: 110, Secure(SSL): No, Server Error: 0x800CCC90, Error Number: 0x800CCC92

Can you help please It is vista as well.thanks

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