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Message-Id: <neko222-nyaaan-22@neko.example.com>
Date: Thu, 22 Apr 2016 23:34:45 +0900
This message was created automatically by mail delivery software.
A message that you sent could not be delivered to one or more of its
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    SMTP error from remote mail server after end of data:
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To: kijitora@example.com
Subject: Nyaan
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To: Kijitora <kijitora@example.com>
From: Sironeko <sironeko@nyaan.example.com>
Message-Id: <neko222-nyaaan-22@neko.example.com>
Date: Thu, 22 Apr 2016 23:34:45 +0900
Nyaan