Undeliverable message when sending email

Hi Experts,

I'm getting the following NDR back, I need some help with identifying where the problem lie?
The person I'm trying to send to put as "recipient.email@somewhere.com" to hide to original email address and my email (the sender) and put as "my.email@somewhere.com"
I suspect the issue is at the recipients end, but would need to understand how you can see see that based on the NDR log below
__________________________________________________________________________

Delivery has failed to these recipients or groups:

recipient.email@somewhere.com
A problem occurred during the delivery of this message. Please try to resend the message later. If the problem continues, contact your helpdesk.

Diagnostic information for administrators:

Generating server: np0nteml04.hiq.net.nz

recipient.email@somewhere.com
#< #5.4.6 smtp;554 5.4.6 mail loop detected> #SMTP#

Original message headers:

Original message headers:

 

Received: from mx1.securemx.biz ([203.84.134.2]) by np0nteml04.hiq.net.nz with

Microsoft SMTPSVC(6.0.3790.4675);       Mon, 19 Sep 2011 17:30:25 +1200

Received: from np0nteml04.hiq.net.nz ([202.14.107.9]) by omr.securemx.biz      with

ESMTP id 4E76D352-B3F00FC1@mta1103.omr;      Mon, 19 Sep 2011 05:29:54 +0000

Received: from mx1.securemx.biz ([203.84.134.2]) by np0nteml04.hiq.net.nz with

Microsoft SMTPSVC(6.0.3790.4675);       Mon, 19 Sep 2011 17:19:19 +1200

Received: from np0nteml04.hiq.net.nz ([202.14.107.9]) by omr.securemx.biz      with

ESMTP id 4E76D0B8-C68B1A2C@mta1103.omr;      Mon, 19 Sep 2011 05:18:48 +0000

Received: from mx1.securemx.biz ([203.84.134.2]) by np0nteml04.hiq.net.nz with

Microsoft SMTPSVC(6.0.3790.4675);       Mon, 19 Sep 2011 17:08:21 +1200

Received: from np0nteml04.hiq.net.nz ([202.14.107.9]) by omr.securemx.biz      with

ESMTP id 4E76CE26-49CC2733@mta1102.omr;      Mon, 19 Sep 2011 05:07:50 +0000

Received: from mx1.securemx.biz ([203.84.134.2]) by np0nteml04.hiq.net.nz with

Microsoft SMTPSVC(6.0.3790.4675);       Mon, 19 Sep 2011 16:57:21 +1200

Received: from np0nteml04.hiq.net.nz ([202.14.107.9]) by omr.securemx.biz      with

ESMTP id 4E76CB91-EADF0A31@mta1101.omr;      Mon, 19 Sep 2011 04:56:50 +0000

Received: from mx1.securemx.biz ([203.84.134.2]) by np0nteml04.hiq.net.nz with

Microsoft SMTPSVC(6.0.3790.4675);       Mon, 19 Sep 2011 16:46:20 +1200

Received: from np0nteml04.hiq.net.nz ([202.14.107.9]) by omr.securemx.biz      with

ESMTP id 4E76C8FD-4B032C0E@mta1103.omr;      Mon, 19 Sep 2011 04:45:49 +0000

Received: from mx1.securemx.biz ([203.84.134.2]) by np0nteml04.hiq.net.nz with

Microsoft SMTPSVC(6.0.3790.4675);       Mon, 19 Sep 2011 16:35:26 +1200

Received: from np0nteml04.hiq.net.nz ([202.14.107.9]) by omr.securemx.biz      with

ESMTP id 4E76C66F-D26809A1@mta1101.omr;      Mon, 19 Sep 2011 04:34:55 +0000

Received: from mx1.securemx.biz ([203.84.134.2]) by np0nteml04.hiq.net.nz with

Microsoft SMTPSVC(6.0.3790.4675);       Mon, 19 Sep 2011 16:24:54 +1200

Received: from np0nteml04.hiq.net.nz ([202.14.107.9]) by omr.securemx.biz      with

ESMTP id 4E76C3F7-BEF13BC7@mta1101.omr;      Mon, 19 Sep 2011 04:24:23 +0000

Received: from mx1.securemx.biz ([203.84.134.2]) by np0nteml04.hiq.net.nz with

Microsoft SMTPSVC(6.0.3790.4675);       Mon, 19 Sep 2011 16:24:52 +1200

Received: from np0nteml04.hiq.net.nz ([202.14.107.9]) by omr.securemx.biz      with

ESMTP id 4E76C3F5-2FD838A0@mta1102.omr;      Mon, 19 Sep 2011 04:24:21 +0000

Received: from mx1.securemx.biz ([203.84.134.2]) by np0nteml04.hiq.net.nz with

Microsoft SMTPSVC(6.0.3790.4675);       Mon, 19 Sep 2011 16:24:49 +1200

Received: from company.co.nz ([202.55.96.5]) by mx1.securemx.biz with ESMTP

      (using TLSv1 with cipher AES256-SHA (256/256 bits))      id

4E76C3F1-99380976@mta1101; Mon, 19 Sep 2011 04:24:18 +0000

Received: from wpdfg.company.co.nz ([172.16.1.20])      by FortiMail.company.co.nz

  with ESMTP id p8J4OEAZ016808-p8J4OEAb016808      (version=TLSv1 cipher=RC4-MD5

bits=128 verify=NO)      for <recipient.email@somewhere.com>; Mon, 19 Sep 2011

16:24:14 +1200

Received: from iuuytrewq02.hdsnz.int (172.16.1.42) by qwertyyu2.hdsnz.int

(172.16.1.20) with Microsoft SMTP Server (TLS) id 8.2.255.0; Mon, 19 Sep 2011

16:24:13 +1200

Content-Type: multipart/related;

      boundary="----=_NextPart_000_8428B_01CC76E8.929AF1E0"

Content-Transfer-Encoding: 7bit

Received: from RVIWPDMBX02.hdsnz.int ([::1]) by iuuytrewq02.hdsnz.int ([::1])  with mapi id 14.01.0289.001; Mon, 19 Sep 2011 16:24:13 +1200

From: Joe Blogg <my.email@somewhere.com>

Content-Class: urn:content-classes:message

Importance: normal

Priority: normal

X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.4862

To: <recipient.email@somewhere.com>

Subject: TEST MESSAGE

Thread-Topic: TEST MESSAGE

thread-index: Acx2hBxU1As5H65HQP+INqaGnAvgiA==

Date: Mon, 19 Sep 2011 04:25:07 +0000

Message-ID: <5B6FECF8C889F7428D4369807C5CFCBD2E264F@RVIWPDMBX02.hdsnz.int>

Accept-Language: en-US

Content-Language: en-US

X-MS-Has-Attach:

X-MS-TNEF-Correlator:

x-originating-ip: [172.16.1.23]

MIME-Version: 1.0

X-OriginalArrivalTime: 19 Sep 2011 04:24:49.0619 (UTC)  FILETIME=[11F8F230:01CC7684]

Return-Path: my.email@somewhere.com

[Edited by SouthMod]