Emails are getting error 550

Emails are getting error 550

Hello,

I setup zoho on a domain just as instructed.

MX RECORDS:
https://dl.dropboxusercontent.com/u/3084937/Screen%20Shot%202013-09-13%20at%205.49.32%20PM.png

DNS RECORDS
https://dl.dropboxusercontent.com/u/3084937/Screen%20Shot%202013-09-13%20at%205.49.56%20PM.png

But when i try to send an test email to the zoho setup account it dosent go trough.

Please advice.
thanks