Subject: Returned mail: see transcript for details

From: Mail Delivery Subsystem <[email-masked]>
Date: Sat, 13 Sep 2025 10:30:29 GMT

The original message was received at Sat, 13 Sep 2025 10:30:27 GMT
from m0417477.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 [BN2PEPF000044A2.namprd02.prod.outlook.com 2025-09-13T10:30:29.556Z 08DDF079E6793B58])

   ----- Transcript of session follows -----
... while talking to infocorp365.mail.protection.outlook.com.:
>>> DATA
<<< 554 5.4.14 Hop count exceeded - possible mail loop ATTR34 [BN2PEPF000044A2.namprd02.prod.outlook.com 2025-09-13T10:30:29.556Z 08DDF079E6793B58]
554 5.0.0 Service unavailable