Date: Mon, 01 Jan 2000 00:00:00 +0000 (UTC)
From: Daniel at Test <daniel@test.com>
Mime-Version: 1.0
Subject: Test incorrect original boundary w. invalid character
To: david@test.com
Content-Type: multipart/related; boundary="------------1234567890@tutanota"

--------------1234567890@tutanota
Content-Type: text/html; charset=UTF-8
Content-transfer-encoding: base64

PGh0bWw+PGgxPkhlbGxvIFdvcmxkITwvaDE+PC9odG1sPg==
--------------1234567890@tutanota--
