Subject: Undelivered Mail Returned to Sender

From: <[email-masked]> (Mail Delivery System)
Date: Tue, 30 Sep 2025 14:20:22 +0300

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.

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