Subject: Delivery Status Notification (Failure)

From: "Mail Delivery System" <[email-masked]>
Date: 10 Nov 2025 18:20:19 +0100

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 [AM1PEPF000252DF.eurprd07.prod.outlook.com 2025-11-10T17:20:20.044Z 08DE1E9A51421D2A]'