My daughters Outlook Express has decided it will not send emails to my isp. They get bounced back, something to do with Daemon does not recognise this address. She can ping my address and get the 4 OK answers back, as I can hers. She has made no changes to my details in her address book and all other peoples addresses work. She can log into her BTYahoo mail through IE and email me from there with no problems. I am receiving emails from others to my address so I don't see a problem with my isp. Any suggestions please on the problem.