Cannot access Comcast.net email

We cannot access our Comcast.net email from iPhone 16 pro max nor Mac Book.  Getting this pop up.  (The mail server "map.comcast.net" is not responding.  Verify that you have entered the correct account info in Mail settings.  Server code "ALERT", server message "Temporarily blacklisted IP Address - try again later.  (we checked as well as resetting password).