Subject: Mail delivery failed: returning message to sender

From: Mail Delivery System <[email-masked]>
Date: Tue, 11 Nov 2025 01:08:39 -0800

This message was created automatically by mail delivery software.

A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:

  [email-masked]
    host bsv-se.mail.protection.outlook.com [52.101.68.18]
    SMTP error from remote mail server after sending data block:
    554 5.4.14 Hop count exceeded - possible mail loop ATTR34 [DB5PEPF00014B9E.eurprd02.prod.outlook.com 2025-11-11T09:08:39.429Z 08DE1EC9ECB74B47]