oldwest

I can't send email but can receive it. I get this error msg

Account: 'pop.charter.net (1)', Server: 'pop.charter.net', Protocol: POP3, Server Response: '-ERR invalid user name or password.', Port: 110, Secure(SSL): No, Server Error: 0x800CCC90, Error Number: 0x800CCC92

C an anyone help?