IMAP Email issue on iPhone

I started receiving the following error on my iPhone when trying to access email via the native ios mail app.  The password works fine on all other devices.

"Password incorrect. Enter password for IMAP." 

I received the following error message once I entered the correct password.

"Cannot get mail. The mail server 'IMAP.comcast.net' is not responding. Verify that you have entered the correct account info in Mail settings.

Server code: AUTHENTICATIONFAILED.  Server message: authentication failed"

I deleted the Xfinity email account from the phone and tried re-adding it. I just just receive the "Password incorrect" error message.