I cannot send mails by outlook express now. But it was ok before. The folowing are error message:
The connection to the server has failed. Account: 'Pop.mail.yahoo.com', Server: 'smtp.mail.yahoo.com', Protocol: SMTP, Port: 25, Secure(SSL): No, Socket Error: 10051, Error Number: 0x800CCC0E
Please do me a favour. Thanks!