Subject: Returned mail: see transcript for details

From: Mail Delivery Subsystem <[email-masked]>
Date: Mon, 10 Nov 2025 17:22:00 GMT

The original message was received at Mon, 10 Nov 2025 17:21:59 GMT
from m0354960.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 [BL6PEPF00020E63.namprd04.prod.outlook.com 2025-11-10T17:22:00.784Z 08DE1F2258EBE8BA])

   ----- Transcript of session follows -----
... while talking to infocorp365.mail.protection.outlook.com.:
>>> DATA
<<< 554 5.4.14 Hop count exceeded - possible mail loop ATTR34 [BL6PEPF00020E63.namprd04.prod.outlook.com 2025-11-10T17:22:00.784Z 08DE1F2258EBE8BA]
554 5.0.0 Service unavailable