Subject: Delivery Status Notification (Failure)

From: "Mail Delivery System" <[email-masked]>
Date: 24 Sep 2025 19:18:31 +0200

The following message to <[email-masked]> was undeliverable.
The reason for the problem:
5.1.0 - Unknown address error 550-'5.4.1 Recipient address rejected: Access denied. For more information see https://aka.ms/EXOSmtpErrors [AMS1EPF0000004E.eurprd04.prod.outlook.com 2025-09-24T17:18:31.245Z 08DDFAF129F6E32D]'