add an account on IPAD

New IPAD owner. My local phone company (ATMC) is my email provider. Using "mail, contacts, etc." I have tried unsuccessfully to add ATMC as "other" account. ATMC is an account on my IPHONE. I have provided as requested my name, ATMC email address, password and "my email account".

I have provided "mail" and "smtp" incoming and outgoing mail server information. The message that comes back is "this account may not be able to send or receive emails. Are you sure you want to save ?" What am I doing wrong