Subject: Delivery Status Notification (Failure)

From: "Mail Delivery System" <[email-masked]>
Date: 18 Nov 2025 10:52:14 +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 [DU6PEPF00009525.eurprd02.prod.outlook.com 2025-11-18T09:52:15.149Z 08DE2435CD925056]'

Subject: Kurs om legionella och energiförluster i tappvattensystem
From: Svensk Energiutbildning <[email-masked]>
To: [email-masked]
Date: Tue, 18 Nov 2025 10:52:14 +0100