I have a website I use for my consulting practice. It is set up through Go Daddy with email. I have the email on my iPhone 6S via something called "pop server". It has worked great for years; however, lately when I get up in the morning, I will have 10 or 20 returned e mails that I did not send to people I do not know......the e mails will be on my PC and my iPhone both. The returned e mails say "Message Delivery Failure. This is an automatically generated Delivery Status Notification. Delivery to the following recipients failed permanently. Then they give an e mail address of someone I never heard off. There will be a bunch of letters and numbers afterwards. Now, what is frustrating is that I cannot send an email via my iPhone anymore as I get messages back immediately saying I have "exceeded my limit"......my account does not have e mail limits....I can, however, send e mail from my PC fine with no problems...….anyone have any ideas?