Split from this thread.

this is the error message I receive when trying to send an e- mail  Subject 'test', Account: 'mail.btinternet.com', Server: 'mail.btinternet.com', Protocol: SMTP, Server Response: '250 SIZE 41943040', Port: 25, Secure(SSL): Yes, Server Error: 250, Error Number: 0x800CCC7D

Right-click on the account name in the folder pane and select Properties. On the Advanced tab, deselect This server requires a secure connection (SSL). On the Servers tab, ensure that My server requires authentication is selected.

Hi Noel,

I tried doing this and it did not send the email (though curiously my WLM is able to receive).

Error message:

A time-out occurred while communicating with the server.

Subject 'Let Us Try Again'
Server: 'mail.btinternet.com'
Windows Live Mail Error ID: 0x800CCC19
Protocol: SMTP
Port: 465
Secure(SSL): No