Subject: Delivery Status Notification (Failure)

From: "Mail Delivery System" <[email-masked]>
Date: 11 Sep 2025 08:13:57 +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 [DB5PEPF00014B98.eurprd02.prod.outlook.com 2025-09-11T06:13:57.047Z 08DDF0095250D0B4]'

Subject: [BULK] Kurs om hur man driftoptimerar och energieffektiviserar byggnader med installationstekniska åtgärder