Certain hosts bounce emails based on the .ooo domain.
Example error message returned from the mail server. Original email has been redacted for privacy.
This is the mail system at host mail.shiny.ooo.
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
<redacted@redacted.com>: host mx2.greenhost.nl[2a00:c6c0:0:111::2525] said:
550 This message is rejected because it scored 105.0 spam points. (in reply
to end of DATA command)
Reporting-MTA: dns; mail.shiny.ooo
X-Postfix-Queue-ID: 4FzKZz4kghz2t7g
X-Postfix-Sender: rfc822; mods@shiny.ooo
Arrival-Date: Mon, 7 Jun 2021 10:08:43 -0700 (PDT)
Final-Recipient: rfc822; redacted@redacted.com
Original-Recipient: rfc822;redacted@redacted.com
Action: failed
Status: 5.0.0
Remote-MTA: dns; mx2.greenhost.nl
Diagnostic-Code: smtp; 550 This message is rejected because it scored 105.0
spam points.
From: mods@shiny.ooo
Subject: <redacted>
Date: June 7, 2021 at 10:08:40 PDT
To: redacted@redacted.com
Certain hosts bounce emails based on the .ooo domain.
Example error message returned from the mail server. Original email has been redacted for privacy.