Subject: Delivery Status Notification (Failure)

From: "Mail Delivery System" <[email-masked]>
Date: 20 Jul 2025 09:24:34 +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 [DB1PEPF000509F2.eurprd02.prod.outlook.com 2025-07-20T07:24:34.474Z 08DDC688C7F184BF]'