Subject: Returned mail: see transcript for details

From: Mail Delivery Subsystem <[email-masked]>
Date: Thu, 11 Sep 2025 09:28:50 GMT

The original message was received at Thu, 11 Sep 2025 09:28:49 GMT
from m0354961.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 [SJ1PEPF000026C4.namprd04.prod.outlook.com 2025-09-11T09:28:50.460Z 08DDF06F068EF293])

   ----- Transcript of session follows -----
... while talking to infocorp365.mail.protection.outlook.com.:
>>> DATA
<<< 554 5.4.14 Hop count exceeded - possible mail loop ATTR34 [SJ1PEPF000026C4.namprd04.prod.outlook.com 2025-09-11T09:28:50.460Z 08DDF06F068EF293]
554 5.0.0 Service unavailable