[libreoffice-website] "Delayed Mail" message from SilverStripe

I did an update on SilverStripe and published, and later got this 
message from the SilverStripe mailer (below). I have never gotten a 
message like this. Does this mean that the person's email is not 
reachable or no longer valid?

Marc

=========================

This is the mail system at host kermit.documentfoundation.org.

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Your message could not be delivered for more than 4 hour(s).
It will be retried until it is 5 day(s) old.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

                   The mail system

<ialkurtass@kacst.edu.sa>: Host or domain name not found. Name service error
    for name=kacst.edu.sa type=MX: Host not found, try again



Reporting-MTA: dns; kermit.documentfoundation.org
X-Postfix-Queue-ID: 9A4F0158E18C
X-Postfix-Sender: rfc822; marc@marcpare.com
Arrival-Date: Thu, 31 Jan 2013 18:52:34 +0100 (CET)

Final-Recipient: rfc822; ialkurtass@kacst.edu.sa
Original-Recipient: rfc822;ialkurtass@kacst.edu.sa
Action: delayed
Status: 4.4.3
Diagnostic-Code: X-Postfix; Host or domain name not found. Name service 
error
    for name=kacst.edu.sa type=MX: Host not found, try again
Will-Retry-Until: Tue,  5 Feb 2013 18:52:34 +0100 (CET)



Return-Path: <marc@marcpare.com>
Received: from localhost (localhost [127.0.0.1])
        by kermit.documentfoundation.org (Postfix) with ESMTP id 9A4F0158E18C
        for <ialkurtass@kacst.edu.sa>; Thu, 31 Jan 2013 18:52:34 +0100 (CET)
X-Virus-Scanned: amavisd-new-2.6.4 (20090625) at 
kermit.documentfoundation.org
Received: from kermit.documentfoundation.org ([127.0.0.1])
	by localhost (kermit.documentfoundation.org [127.0.0.1]) (amavisd-new, 
port 10024)
        with LMTP id 4rkkwyHXLBN7 for <ialkurtass@kacst.edu.sa>;
        Thu, 31 Jan 2013 18:47:09 +0100 (CET)
Received: by kermit.documentfoundation.org (Postfix, from userid 1005)
        id 59651158E15A; Thu, 31 Jan 2013 18:47:09 +0100 (CET)
To: ialkurtass@kacst.edu.sa
Subject: CMS Workflow: LibreOffice - Page: System Requirements - Status: 
Completed
X-PHP-Originating-Script: 1005:Mailer.php
MIME-Version: 1.0
Content-Type: multipart/alternative; boundary="----=_NextPart_172434390819"
Content-Transfer-Encoding: 7bit
From: marc@marcpare.com
X-Mailer: SilverStripe Mailer - version 2006.06.21 (Sent from 
"www.libreoffice.org")
X-Priority: 3
X-SilverStripeBounceURL: www.libreoffice.org/Email_BounceHandler
X-SilverStripeSite: mysite
Message-Id: <20130131174709.59651158E15A@kermit.documentfoundation.org>
Date: Thu, 31 Jan 2013 18:47:09 +0100 (CET)

===========================


--
Marc Paré
Marc@MarcPare.com
http://www.parEntreprise.com
parEntreprise.com Supports OpenDocument Formats (ODF)
parEntreprise.com Supports http://www.LibreOffice.org


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