Subject: Mail Delivery Failure

From: Mail Delivery System <[email-masked]>
Date: Sun, 07 Dec 2025 07:12:22 +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 [AMS1EPF0000004A.eurprd04.prod.outlook.com 2025-12-07T07:12:22.890Z 08DE3427D137C5E3]

The message subject was: Kurs om hur energiförluster minskas i VVC- och tappvattensystem
The message date was: Sun, 07 Dec 2025 08:12:19 +0100
The message identifier was: 74/17-30142-6D825396
The message reference was: server-15.tower-872.messagelabs.com!1765091541!27882!1

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