Email not working from website

We have hosted our email on Zoho Mail. When I send an email from the website contact form, the email is not received. So, I created an email in CyberPanel. After checking, I found that the contact form email is received in the CyberPanel email panel. However, we need the emails to be received in our Zoho-hosted email.

When I send an email from the CyberPanel-hosted email to a Zoho-hosted email, the CyberPanel email is not delivered, and it says 'email address not found.