Subject: Mail Delivery Failure

From: Mail Delivery System <[email-masked]>
Date: Thu, 25 Sep 2025 06:10:04 +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 [DB5PEPF00014B9C.eurprd02.prod.outlook.com 2025-09-25T06:10:04.713Z 08DDFAD442169938]

The message subject was: Lär dig hantera dagsljuskraven i Boverkets nya byggregler
The message date was: Thu, 25 Sep 2025 08:10:02 +0200
The message identifier was: 2B/05-30111-CBCD4D86
The message reference was: server-3.tower-872.messagelabs.com!1758780602!727244!1

Please do not reply to this email as it is sent from an unattended mailbox.
Contact your email administrator if you need more information, or
instructions for resolving this issue.