Not Able to Send Email but Can Receive

[Dorothy]

I have an error message which reads
Account:'mail.btinternet.com' Server: 'mail.btinternet.com'
Protocol: SMTP, Server Response '2508BITMIME', Port 25,Secure (SSL) Yes
Server Error 250 Error Number OX800CC70.
can anyone help?
Thank you

 

[mac]

I have an error message which reads
Account:'mail.btinternet.com' Server: 'mail.btinternet.com'
Protocol: SMTP, Server Response '2508BITMIME', Port 25,Secure (SSL) Yes
Server Error 250 Error Number OX800CC70.
can anyone help?
Thank you

You asked this same question yesterday at 11.49 GMT yesterday, you had
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Subject : Email Not Sending but Can Receive.