Subject: Mail delivery failed: returning message to sender

From: Mail Delivery System <[email-masked]>
Date: Mon, 12 Jan 2026 23:02:08 -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 [52.101.73.16]
    SMTP error from remote mail server after sending data block:
    554 5.4.14 Hop count exceeded - possible mail loop ATTR34 [AMS0EPF00000199.eurprd05.prod.outlook.com 2026-01-13T07:02:08.470Z 08DE4E4BCBA65BA4]