--- !ruby/hash:ActiveSupport::HashWithIndifferentAccess
from: MAILER-DAEMON@mx1.example.com (Mail Delivery System)
from_email: MAILER-DAEMON@mx1.example.com
from_display_name: Mail Delivery System
to: me@example.com
subject: Undelivered Mail Returned to Sender
body: |
  This is the mail system at host mx1.example.com.

  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

  <notextisting@example.com>: user unknown
content_type: text/plain
attachments:
- !ruby/hash:ActiveSupport::HashWithIndifferentAccess
  data: |
    Reporting-MTA: dns; mx1.example.com
    X-Postfix-Queue-ID: D8A14202512E
    X-Postfix-Sender: rfc822; me@example.com
    Arrival-Date: Mon,  6 Nov 2017 03:24:29 +0100 (CET)

    Final-Recipient: rfc822; notextisting@example.com
    Original-Recipient: rfc822;notextisting@example.com
    Action: failed
    Status: 5.1.1
    Diagnostic-Code: x-unix; user unknown
  filename: Delivery report.txt
  preferences: !ruby/hash:ActiveSupport::HashWithIndifferentAccess
    Content-Type: message/delivery-status
    Content-Description: Delivery report
    Mime-Type: message/delivery-status
    Charset: UTF-8
- !ruby/hash:ActiveSupport::HashWithIndifferentAccess
  data: "Return-Path: <me@example.com>\nReceived-SPF: Pass (mailfrom) identity=mailfrom;
    client-ip=127.0.0.1; helo=arber.example.com; envelope-from=me@example.com; receiver=<UNKNOWN>
    \nReceived: from arber.example.com (arber.example.com [127.0.0.1])\n  (using TLSv1.2
    with cipher AECDH-AES256-SHA (256/256 bits))\n  (No client certificate requested)\n
    \ by mx1.example.com (Postfix) with ESMTPS id D8A14202512E\n  for <notextisting@example.com>;
    Mon,  6 Nov 2017 03:24:29 +0100 (CET)\nReceived: from [10.8.0.6] (kanzel.example.com
    [5.9.62.170])\n  by arber.example.com (Postfix) with ESMTPSA id 498D75FEB6\n  for
    <notextisting@example.com>; Mon,  6 Nov 2017 03:24:27 +0100 (CET)\nFrom: Martin
    Edenhofer <me@example.com>\nContent-Type: text/plain; charset=utf-8\nContent-Transfer-Encoding:
    quoted-printable\nMime-Version: 1.0 (Mac OS X Mail 10.3 \\(3273\\))\nSubject:
    =?utf-8?B?aGVsbG8gMTIzIMOkw7bDvMOf?=\nMessage-Id: <E8C3CD7C-8350-4E48-97C5-AE18EE900ECD@example.com>\nDate:
    Mon, 6 Nov 2017 03:24:25 +0100\nTo: notextisting@example.com\nX-Mailer: Apple
    Mail (2.3273)\n\nhello 123 =C3=A4=C3=B6=C3=BC=C3=9F=\n"
  filename: hello 123 äöüß.eml
  preferences: !ruby/hash:ActiveSupport::HashWithIndifferentAccess
    Content-Type: message/rfc822
    Content-Description: Undelivered Message
    Mime-Type: message/rfc822
    Charset: UTF-8