Subject: Mail Delivery Failure

From: Mail Delivery System <[email-masked]>
Date: Tue, 13 Jan 2026 07:03:19 +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 [DB5PEPF00014B92.eurprd02.prod.outlook.com 2026-01-13T07:03:19.354Z 08DE4E3E2A41C066]

The message subject was: Lär dig hantera dagsljuskraven i Boverkets nya byggregler
The message date was: Tue, 13 Jan 2026 08:03:17 +0100
The message identifier was: E5/5B-31039-63EE5696
The message reference was: server-6.tower-830.messagelabs.com!1768287797!43260!1

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