On Godaddy hosting, I was not able to get the emails. Everytime someone sent me an email, they got a 550 error.
220.127.116.11 does not like recipient.
Remote host said: 550 #5.1.0 Address rejected firstname.lastname@example.org
Giving up on 18.104.22.168.
I realized that many users are getting this error message with Godaddy. There is a simple resolution. Their customer service was very fast to respond. The Resolution is to Update your MX Record.
1. In the My Products section, click Email.
2. On the Manage Email page, click Manage Account next to the account you want to change. The Email Control Center displays.
3. Go to the Domains tab.
4. Select the email account you want to verify MX records for, and then click Server Addresses.
5. Click Update my MX records for me to automatically update your MX records.