Why I cant received emails from my customers?

Why I cant received emails from my customers?

Customers are sending me emails and they are getting this error: 
...............................................................................................................................................
Delivery to the following recipient failed permanently:

      jaime.valdivia@narevi.net

Technical details of permanent failure:
Google tried to deliver your message, but it was rejected by the server for the recipient domain  narevi.net  by  smtp.secureserver.net . [72.167.238.29].

The error that the other server returned was:
550 5.1.1 < jaime.valdivia@narevi.net > Recipient not found.  < http://x.co/irbounce >
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ALSO IN THE MXTOOLBOX appears this:

Reported by  ns40.domaincontrol.com  on 3/9/2015 at  11:58:52 AM (UTC -5)