For the last three weeks I have been getting an EMail authentication failure on one or more of my email addresses. If I do no nothing and let the email refresh on the next scheduled refresh the mail comes in OK, or if I do a manual check it comes in OK. It seems that if I just leave the automatic refresh on I get the failure. I ahve not had this problem before, I have changed nothing and I have had this account for nearly 6 years without problem. It happens on outlook and on my phone.