こんにちは、いつもお世話になっております。
最近「Mail Delivery System」という差出人から
「Undelivered Mail Returned to Sender」という件名でメールがたくさん来ます。
メールヘッダ情報をサポート宛に送ろうとしたのですが、
情報が不完全らしく、送ることができません。
対応をお願いできないでしょうか？

---件名-----
Undelivered Mail Returned to Sender

---差出人----
"Mail Delivery System" <MAILER-DAEMON@mgw2.zenno.net>

---本文-----


This is the mail system at host mgw2.zenno.net.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

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

<私のメールアドレス>: host 127.0.0.1[127.0.0.1] said: 554 5.6.0 Reject,
id=34226-03 - BAD HEADER (in reply to end of DATA command)

----ヘッダ------
Return-Path: <>
Delivered-To: mimizu@nakayoshi.cc
Received: (qmail 9940 invoked from network); 20 Feb 2017 05:11:38 +0900
Received: from unknown (HELO mgw2.zenno.net) (192.168.0.147)
by msv3.zenno.net with SMTP; 20 Feb 2017 05:11:38 +0900
Received: by mgw2.zenno.net (Postfix)
id 03CDC25F84B; Mon, 20 Feb 2017 05:11:38 +0900 (JST)
Date: Mon, 20 Feb 2017 05:11:38 +0900 (JST)
From: MAILER-DAEMON@mgw2.zenno.net (Mail Delivery System)
Subject: Undelivered Mail Returned to Sender
To: mimizu@nakayoshi.cc
Auto-Submitted: auto-replied
MIME-Version: 1.0
Content-Type: multipart/report; report-type=delivery-status;
boundary="DA91C25F859.1487535098/mgw2.zenno.net"
Content-Transfer-Encoding: 8bit
Message-Id: <20170219201138.03CDC25F84B@mgw2.zenno.net>

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