I recently changed my mobile broadband from 3 to Vodafone. Since I have done this, every time I try to send an email from outlook, I get an immediate message from 'System Administrator' telling me my message could not be sent and also there's something about IP's and theres a link to a site called 'spamhaus'. I can receive email no problem. Is there something I can do about this myself, or do I have to go on the phone for 2 hours to a support line?
