Subject: Returned mail: see transcript for details

From: Mail Delivery Subsystem <[email-masked]>
Date: Thu, 11 Sep 2025 14:32:08 GMT

The original message was received at Thu, 11 Sep 2025 14:32:07 GMT
from m0417480.ppops.net [127.0.0.1]

   ----- The following addresses had permanent fatal errors -----
<[email-masked]>
    (reason: 554 5.4.14 Hop count exceeded - possible mail loop ATTR34 [DS3PEPF000099E0.namprd04.prod.outlook.com 2025-09-11T14:32:08.142Z 08DDF0500B6D9A2B])

   ----- Transcript of session follows -----
... while talking to infocorp365.mail.protection.outlook.com.:
>>> DATA
<<< 554 5.4.14 Hop count exceeded - possible mail loop ATTR34 [DS3PEPF000099E0.namprd04.prod.outlook.com 2025-09-11T14:32:08.142Z 08DDF0500B6D9A2B]
554 5.0.0 Service unavailable