Subject: Mail Delivery Failure

From: Mail Delivery System <[email-masked]>
Date: Mon, 29 Sep 2025 06:01:30 +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 [DB1PEPF00039233.eurprd03.prod.outlook.com 2025-09-29T06:01:30.609Z 08DDFAC1C0AB3C4D]

The message subject was: Kurs om hur man förebygger och hanterar utbrott av legionella
The message date was: Mon, 29 Sep 2025 08:01:27 +0200
The message identifier was: 4D/19-29928-9B02AD86
The message reference was: server-2.tower-872.messagelabs.com!1759125688!868606!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.