Subject: Mail Delivery Failure

From: Mail Delivery System <[email-masked]>
Date: Thu, 23 Oct 2025 07:31:19 +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 [DU2PEPF0001E9C2.eurprd03.prod.outlook.com 2025-10-23T07:31:19.542Z 08DE0EEE5EF04AB1]

The message subject was: Ny kurs: Värmepump som ersättning eller komplement till befintlig värmeförsörjning
The message date was: Thu, 23 Oct 2025 09:31:14 +0200
The message identifier was: 65/12-32378-7C9D9F86
The message reference was: server-11.tower-850.messagelabs.com!1761204677!302!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.