We have a SBS 2011 server using Exchange 2010. We have several users that have their emails syncing on their iPhones. I am having issues with one user getting their emails to work on their iPhone. I have tried to configure this user on my iPhone with the same results. We both are using iOS 11.4.1. Everything is configured correctly and I get all check marks after manually configuring the mail server in Accounts & Passwords. But when I go to the Apple mail app it comes up with the message "Cannot Get Mail The connection to the server failed." I'm thinking it is a problem with this particular user because everyone else that I have on iPhones is not having this issue. Any ideas or suggestions would be greatly appreciated.