Das ist der Quellcodeausschnitt einer der betroffenen E-Mails:
Code
MIME-Version: 1.0
Content-Type: multipart/related;
boundary="aussen_0987654321_0987654321_0987654321_0987654321_0987654321"
Message-ID:
<XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX>
Date: Fri, 2 Oct 2020 21:06:11 +0200
X-Null-Tag: 9c533cd4e641fb4a6c4333d0751bf891
X-Antispam: clean, score=1
X-Antivirus: Avast (VPS 201001-2, 01.10.2020), Inbound message
X-Antivirus-Status: Clean
--aussen_0987654321_0987654321_0987654321_0987654321_0987654321
Content-Type: text/plain; charset="iso-8859-1"
Content-Transfer-Encoding: base64
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Content-Type: application/pdf
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename="XXXXXXXXXXX.pdf"
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--aussen_0987654321_0987654321_0987654321_0987654321_0987654321--
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