I have several email addresses set up on iPad Mail and one day my iPad suddenly stopped sending emails but is receiving them okay. It doesn’t matter what address is used as the default or where I am when I try to send an email. The message I am receiving is: The server rejected one of the recipient’s addresses and the mail has been placed in the Outbox” where it sits indefinitely until I remove it. Can anyone help me as there are times I need to be able to send emails from my iPad. Thanks.