If anyone is sending mail to me, I am receiving the below error. 

Delivery to the following recipient failed permanently:

      info@kijag.com

Technical details of permanent failure:
Google tried to deliver your message, but it was rejected by the server for the recipient domain  kijag.com  by  mx.zoho.com . [165.254.167.50].

The error that the other server returned was:
554 5.2.3 MailPolicy violation Error delivering to mailboxes

Can you please rectify the issue and confirm what is wrong.