Unable to setup Exchange Email Account in Apple Mail on iMac running Mojave

Today, GoDaddy made some changes to my Microsoft Exchange email account, necessitating me to re-enter the account password in Mail. I was never able to successfully log in. I tried deleting the account in Mail (and in System Preferences) and then adding it back, but I can never get it to work. After typing the the password for the new Exchange account, I just get a spinning wheel and the activation process never completes. Can someone please help?!