Undelivered Mail Returned to Sender

From: Mail Delivery System <MAILER-DAEMON_at_FreeBSD.org>
Date: Sun, 17 Oct 2021 00:55:14 +0000 (UTC)
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

<freebsd-isp_at_mlmmj.nyi.freebsd.org> (expanded from <freebsd-isp_at_freebsd.org>):
    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)

attached mail follows:

The original message was included as attachment

Received on Sun Oct 17 2021 - 00:55:14 UTC

Original text of this message