If your email is not coming into your account, is not being sent, or you get an SMTP Authorization error, please check this setting.
1.) Log into your cPanel
2.) Navigate to the MX Entry Icon
3.) Choose the email domain you would like to check.
4.) Select the Local Mail Exchanger and click CHANGE
5.) Check your email.
You might need to wait a little bit for this change to take effect. You should start to see mail flowing soon.