Subject: Mail Delivery Failure

From: Mail Delivery System <[email-masked]>
Date: Thu, 23 Oct 2025 07:31:32 +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 [DU6PEPF0000A7E0.eurprd02.prod.outlook.com 2025-10-23T07:31:32.592Z 08DE120277CF884E]

The message subject was: Ny kurs: Värmepump som ersättning eller komplement till befintlig värmeförsörjning
The message date was: Thu, 23 Oct 2025 09:31:25 +0200
The message identifier was: 85/90-02955-4D9D9F86
The message reference was: server-29.tower-850.messagelabs.com!1761204690!50418!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.