Subject: Delivery Status Notification (Failure)

From: "Mail Delivery System" <[email-masked]>
Date: 14 Sep 2025 16:56:32 +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 [AMS0EPF000001AC.eurprd05.prod.outlook.com 2025-09-14T14:56:32.363Z 08DDF221A1FBFFE1]'