When trying to send E-mails the following error message appears:- An error occurred while sending mail. The mail server responded: Sorry, we couldn't send your message. The network address your device has been assigned is on an industry blacklist to prevent Spam. The problem should be addressed by your network service provider. Please try again later or use webmail.. Please verify that your email address is correct in your account settings and try again.

I can send mails using mybtinternet website.