3rd Party Emails

3rd Party Emails

We are able to send and receive emails between employees connected on Zoho. We are also able to send emails to 3rd party emails such as a gmail account, but we cannot receive emails from 3rd party accounts such as gmail. We are connected to our domain, jn-industries.com, through GoDaddy. We have connected it exactly how it says to do it by using CNAME and MX. What is the problem?