I recently purchased an iPhone 6.  I am trying to set up my mail accounts and I’m having problems.  I can send and receive email for the email address  on my iMac and Mackbook Pro and my old iPhone 4s.   When I enter my password in the mail settings in the iPhone6 it is accepted.  However when the phone checks for mail I receive an error message: Cannot Get Mail, The user name or password for the account is incorrect.  Please advise.

Thanks - Charles Ford