here is the bounce back from yahoo
Sorry, we were unable to deliver your message to the following address.
<info@bankvaria.co.id>:
Unable to deliver message after multiple retries, giving up.
--- Below this line is a copy of the message.
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s2048; t=1558029397; bh=HjxTSY+vHo/cMExhbZ8cN0HZ0nlp3XbvJS7yLWOiAtA=; h=Date:From:To:Subject:References:From:Subject; b=QqQDE+UFsUkFO2eRsAuiyND4GBlK1cWcVo/iP++Yt08pAG54UdilMOfsvosXEI1kZCdgglTazempRuyAULcnPV5XKNqVfrxAV2I8h9EQ5YG/USJZnrdmX58SaWmkQ3jqL/i6sInzqrOfXs8lIT8EP+jKRMhSCu//+XAEj9Xu5g8k7woqLbjfZouX+0Cq8B+Ea+vUlC6LjsZyUOPq56dGOrOYk1SVk0SbGwRjld3Da0D1lLDvXG6/pmJB5bTWxaN18b8VL9Wuzy0VW3hvaY/Qy35jF8FGpo3eP81Llgone+3mezLbqVKFwbZqJiYucIGw8wAw6PBfzFbh4D3ye9ROeQ==
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Received: from sonic.gate.mail.ne1.yahoo.com by sonic309.consmr.mail.sg3.yahoo.com with HTTP; Thu, 16 May 2019 17:56:37 +0000
Date: Thu, 16 May 2019 14:46:52 +0000 (UTC)
From: nicholas alexander <nicholas_alexanders@yahoo.com>
To: Bankvaria Co Info <info@bankvaria.co.id>
Message-ID: <130510362.1543804.1558018012295@mail.yahoo.com>
Subject: ayolah masuk email
MIME-Version: 1.0
Content-Type: multipart/alternative;
boundary="----=_Part_1543803_134954794.1558018012294"
References: <130510362.1543804.1558018012295.ref@mail.yahoo.com>
X-Mailer: WebService/1.1.13634 YMailNorrin Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.131 Safari/537.36
Content-Length: 469
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Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 7bit
masuk kek
------=_Part_1543803_134954794.1558018012294
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: 7bit
<html><head></head><body><div class="yahoo-style-wrap" style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><div>masuk kek</div></div></body></html>
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score from
https://www.mail-tester.com/ is 100%
really confused at the moment