Undelivered Mail Returned to Sender

This is a MIME-encapsulated message.

--4HKTgN1r08z4tnX.1632950148/mx1.freebsd.org
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Content-Type: text/plain; charset=utf-8
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This is the mail system at host mx1.freebsd.org.

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

<[email protected]> (expanded from <[email protected]>):
    host mlmmj.nyi.freebsd.org[2610:1c1:1:606c::50:24] said: 554 5.7.1 Spam
    message rejected (in reply to end of DATA command)

--4HKTgN1r08z4tnX.1632950148/mx1.freebsd.org
Content-Description: Delivery report
Content-Type: message/delivery-status

Reporting-MTA: dns; mx1.freebsd.org
X-Postfix-Queue-ID: 4HKTgN1r08z4tnX
X-Postfix-Sender: rfc822; [email protected]
Arrival-Date: Wed, 29 Sep 2021 21:15:43 +0000 (UTC)

Final-Recipient: rfc822; [email protected]
Original-Recipient: rfc822;[email protected]
Action: failed
Status: 5.7.1
Remote-MTA: dns; mlmmj.nyi.freebsd.org
Diagnostic-Code: smtp; 554 5.7.1 Spam message rejected

--4HKTgN1r08z4tnX.1632950148/mx1.freebsd.org
Content-Description: Undelivered Message Headers
Content-Type: text/rfc822-headers
Content-Transfer-Encoding: 8bit

Return-Path: <[email protected]>
Received: from freebsd.org (88-107-190-142.dynamic.dsl.as9105.com [88.107.190.142])
	by mx1.freebsd.org (Postfix) with ESMTP id 4HKTgN1r08z4tnX
	for <[email protected]>; Wed, 29 Sep 2021 21:15:43 +0000 (UTC)
	(envelope-from [email protected])
From: [email protected]
To: [email protected]
Subject: Returned mail: Data format error
Date: Thu, 30 Sep 2021 05:55:42 +0200
MIME-Version: 1.0
Content-Type: multipart/mixed;
	boundary="----=_NextPart_000_0005_755AD976.E4591632"
X-Priority: 3
X-MSMail-Priority: Normal
X-Mailer: Microsoft Outlook Express 6.00.2600.0000
X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2600.0000
X-Rspamd-Queue-Id: 4HKTgN1r08z4tnX
X-Spamd-Bar: /
Authentication-Results: mx1.freebsd.org;
	none
X-Spamd-Result: default: False [0.00 / 15.00];
	 ASN(0.00)[asn:9105, ipnet:88.106.0.0/15, country:GB];
	 local_wl_from(0.00)[freebsd.org]

--4HKTgN1r08z4tnX.1632950148/mx1.freebsd.org--