email addresses don't resolve

email addresses don't resolve

I keep getting the following email error when sending to any address with the domain: interpret.org.nz

This message was created automatically by mail delivery software. 
A message that you sent could not be delivered to one or more of its recipients. This is a permanent error. 

leo.saumure@interpret.org.nz  Domain Not Resolved 


Received:from 172.29.243.251 (172.29.243.251 [172.29.243.251]) by mx.zohomail.com 
    with SMTP id 1278578678951866.4318770719983; Thu, 8 Jul 2010 01:44:38 -0700 (PDT) 
Message-ID:<129b13a5bcd.-7545594134249431247.381860556174780335@zoho.com> 
Date:Thu, 08 Jul 2010 20:44:38 +1200 
From:Admin <interpret06@zoho.com> 
User-Agent:Zoho Mail 
To:"leo.saumure" <leo.saumure@interpret.org.nz> 
Subject:Testing 
Content-Type:multipart/alternative; 
    boundary="----=_Part_8556_1322595242.1278578678733"

This only happens using zoho mail, and I can receive email from this domain without issue.  Replies or direct emails on my part get the error message above.

Thanks,

Leo

Leo Saumure