:Mail Outgoing blocked. Reason :Daily Mail Bounce Count Exceeds Limit [Bounce count=20]

:Mail Outgoing blocked. Reason :Daily Mail Bounce Count Exceeds Limit [Bounce count=20]

Hi,
    We have are using Zoho Mail One of our email ID " notifications@clickcab.in" has been blocked.The error I received is Daily Mail Bounce Count Exceeds Limit [Bounce count=20]. Could you unblock the ID and also let me know the maximum limit to this. Also let me know how to go about this in the future if this happens again...