Delivery Status Notification (Failure)

Delivery to the following recipient failed permanently:

root@server-asasha.net

Technical details of permanent failure:
DNS Error: Address resolution of server-asasha.net. failed: Domain name not found

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Wed, 30 Dec 2015 23:56:22 -0800 (PST)
From: Cron Daemon <4sumy4@gmail.com>
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for root@server-asasha.net; Thu, 31 Dec 2015 09:54:01 +0200
To: root@server-asasha.net
Subject: Cron <root@debian-7-5> ntpdate 0.ua.pool.ntp.org
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X-Cron-Env: <SHELL=/bin/sh>
X-Cron-Env: <HOME=/root>
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Message-Id: <E1aEY3d-00032n-JA@debian-7-5>
Date: Thu, 31 Dec 2015 09:54:01 +0200

/bin/sh: 1: ntpdate: not found