Email was rejected by the server, even though MX entries are correct

Email was rejected by the server, even though MX entries are correct

Technical details of permanent failure:
Google tried to deliver your message, but it was rejected by the server for the recipient domain  oribi.co.in  by  ifastnet13.org . [31.22.4.243]

My MX records are updated properly I have checked it through 3rd party tool

http://mxtoolbox.com/archive/?actionstring=mx:oribi.co.in

Cross verified MX entries with my Domain Registrar they confirmed entries are correct and reflected properly.

Can it be a propagation delay?

Could you please check? 

Regards,
Oribi