Subject: Delivery Status Notification (Failure)

From: "Mail Delivery System" <[email-masked]>
Date: 15 Jan 2026 12:12:56 +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 [AM3PEPF0000A790.eurprd04.prod.outlook.com 2026-01-15T11:12:56.711Z 08DE4E4F83C2216B]'

Subject: Lär dig energieffektivisera byggnadens installationssystem
From: Svensk Energiutbildning <[email-masked]>
To: [email-masked]
Date: Thu, 15 Jan 2026 12:12:35 +0100