Mailbox Delivery Failture policy Error

Mailbox Delivery Failture policy Error

Hi Support Team,

I was notified by one of my vendors that they cannot send an email to me from their automated email system and they sent me this message:

The following recipient(s) could not be reached:


       dominictan@babiesontheblock.com  on 3/29/2016 12:48 PM
             mx2.zohomail.com : 552 5.1.1 < dominictan@babiesontheblock.com > Mailbox delivery failure policy error

Is there anything that i need to do?

Thank you,
Dominic