Subject: Mail Delivery Failure

From: Mail Delivery System <[email-masked]>
Date: Tue, 11 Nov 2025 09:03:06 +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 [DU2PEPF00028D0E.eurprd03.prod.outlook.com 2025-11-11T09:03:06.112Z 08DE1F01623123B1]

The message subject was: Lär dig hantera dagsljuskraven i Boverkets nya byggregler
The message date was: Tue, 11 Nov 2025 10:02:12 +0100
The message identifier was: 5E/6E-29476-9CBF2196
The message reference was: server-15.tower-878.messagelabs.com!1762851733!33532!1

Please do not reply to this email as it is sent from an unattended mailbox.
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