Subject: Undelivered Mail Returned to Sender

From: <[email-masked]> (Mail Delivery System)
Date: Sun, 07 Dec 2025 08:29:37 +0100

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 [email-masked]

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

<[email-masked]>: 554 5.4.12 SMTP; Hop count exceeded - possible mail loop detected on message id <[email-masked]>