553 Relaying disallowed when using GMAIL

553 Relaying disallowed when using GMAIL

After following all the steps to set up MX entries on my Godaddy domain and after validating that MX entries are ok from a Zoho Mail Admin perspective, I still have the error after sending from Gmail: "553 Relaying disallowed". Hence, I believe there is something else going on.

Important: I have configured and confirmed the usage of my email, which is a group mail on my gmail account.

Please validate both images attached/below. I would appreciate any help in trying to fix this. Thanks!