I work for a county government office. Our email goes through an exchange server. I have worked to set up the mail client through my Iphone 6S but I only get the "Cannot get mail. The connection to the server failed." message. I have set up coworkers phones for them and they work fine. I even went to our IT director who deleted and reinstalled the account setttings on my phone to no avail.
I am trying the community as a last ditch effort.