Subject: Mail Delivery Failure

From: Mail Delivery System <[email-masked]>
Date: Mon, 06 Oct 2025 09:12:08 +0000

This is the mail delivery agent at Symantec Email Security.cloud.

I was unable to deliver your message to the following addresses:

[email-masked]

Reason: 550 5.4.1 Recipient address rejected: Access denied. For more information see https://aka.ms/EXOSmtpErrors [DU6PEPF0000A7E3.eurprd02.prod.outlook.com 2025-10-06T09:12:08.715Z 08DE039057984CE2]

The message subject was: Förstår du dagsljuskraven i Boverkets nya byggregler?
The message date was: Mon, 06 Oct 2025 08:23:23 +0200
The message identifier was: 57/71-21704-8E783E86
The message reference was: server-25.tower-872.messagelabs.com!1759741927!14658!1

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