Yahoo E Mails

<p>All my family have Yahoo e mail account but i cannot send them an e mail from my Telkomsa e mail address , it says delivered but they neverT<br />All my family have Yahoo e mail account but i cannot send them an e mail from my Telkomsa e mail address , it says delivered but they never receive the mail. Telkom have advised that the problem does not lie on their side. I would appreciate your assistance Regards Alan ***</p>