Emails not being received

I have set up an email under my domain (a GoDaddy account using cPanel) and it works fine sending emails to my Gmail email, but it does not receive messages sent from a Gmail account back to that cPanel email account. Gmail notifies me that the email is not configured properly to receive messges. I apologize for being a novice, but I'm trying to figure out the steps to resolve the issue. I believe I have a proper MX record set up. I have not found the EMail Deliverability setting in cPanel. Any help would be great!