Subject: Delivery Status Notification (Failure)

From: "Mail Delivery System" <[email-masked]>
Date: 19 Aug 2025 09:34:06 +0000

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 [AM3PEPF0000A790.eurprd04.prod.outlook.com 2025-08-19T09:34:07.092Z 08DDDC0E5E802504]'