My friend and I have NTL email address. We both use Windows Live Mail.
Recently some important emails have not been received by the email address using Live Mail as the client. The email was resent to an alternative email address using Web Mail as the client and was received, and was posted as SPAM.
Experimented by seeing what happens when I forwarded the received 'SPAM' message (Web Mail) to the Live Mail account, it could not be sent because Spam content found!