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<p><b><font color="#000066" size="3" face="Arial">Delivery has failed to these recipients or groups:</font></b></p>
<font color="#000000" size="2" face="Tahoma"><p><a href="mailto:colegiociud.jard@att.com.mx">colegiociud.jard@att.com.mx</a><br>
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<font color="#808080" size="2" face="Tahoma"><p><b>Diagnostic information for administrators:</b></p>
<p>Generating server: mxsprmbx16.mx.att.com<br>
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<p>colegiociud.jard@att.com.mx<br>
Remote Server  returned '550 5.1.10 RESOLVER.ADR.RecipientNotFound; Recipient not found by SMTP address lookup'<br>
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<p>Original message headers:</p>
<pre>Received: from mxsprmbx12.mx.att.com (135.208.67.19) by mxsprmbx16.mx.att.com
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Message-ID: <004801d76132$01480845$597973ae@ybafr>
From: <usc-csee@cs.hanyang.ac.kr>
To: <colegiociud.jard@att.com.mx>
Subject: =?utf-8?B?Q29uZmlybWFjacOzbiBkZSB0cmFuc2ZlcmVuY2lhIGRlIGRpbmVybw==?=
Date: Mon, 14 Jun 2021 18:53:46 +0400
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