Bellsouth Email not responding errors occur all the time. It is mostly due to your BellSouth email login errors or authentication problems. Sometimes there’s a lot of trouble while logging in to the BellSouth email account and the easiest way to fixing it is to change your password and generate a secure mail key. You can use this secure mail key instead of your AT&T password once you set up an email app.
More Details: https://contactforhelp.com/blog/how-to-set-up-and-fix-bellsouth-email-not-working-issue/