If you recently changed or reset the password for your MC domain (computer login) or CUIMC email account, iPhones and iPads that have stored the old email password in a Mail or Outlook app should automatically prompt you to enter the new one. In some cases it may take a short period of time (15-20 minutes) before the device will notice and show an error message.
Follow any prompts to resolve login issues - which should include entering the new password - and make sure you can connect and send messages again. If you still cannot, try instructions to unlock your account and use more detailed steps below.
If you are still not able to update your password or connect see instructions to Remove Your CUMC Email on iPhone or iPad, then follow current instructions to set it back up on the device.