Subject: Returned mail: see transcript for details

From: Mail Delivery Subsystem <[email-masked]>
Date: Fri, 19 Sep 2025 12:49:45 GMT

The original message was received at Fri, 19 Sep 2025 12:49:43 GMT
from m0417474.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 [CH2PEPF00000145.namprd02.prod.outlook.com 2025-09-19T12:49:44.817Z 08DDF6160B5D9BB2])

   ----- Transcript of session follows -----
... while talking to infocorp365.mail.protection.outlook.com.:
>>> DATA
<<< 554 5.4.14 Hop count exceeded - possible mail loop ATTR34 [CH2PEPF00000145.namprd02.prod.outlook.com 2025-09-19T12:49:44.817Z 08DDF6160B5D9BB2]
554 5.0.0 Service unavailable