I canot send email in outlook windows mail I can received mail
Messages are still in the outbox

The connection to the server has failed. Subject 'email', Account:
'pop3.blueyonder.co.uk', Server: 'smtp.bluyonder.co.uk', Protocol: SMTP,
Port: 25, Secure(SSL): No, Socket Error: 10061, Error Number: 0x800CCC0E

This is the error message I received
My ISP blueyonder.co.uk

Please can you help

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grandpabob