Subject: Mail Delivery Failure

From: Mail Delivery System <[email-masked]>
Date: Tue, 18 Nov 2025 09:52:15 +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 [DU6PEPF0000A7DE.eurprd02.prod.outlook.com 2025-11-18T09:52:15.329Z 08DE2442D96F817D]

The message subject was: Kurs om legionella och energiförluster i tappvattensystem
The message date was: Tue, 18 Nov 2025 10:52:13 +0100
The message identifier was: E5/5B-30758-FC14C196
The message reference was: server-9.tower-850.messagelabs.com!1763459533!71679!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.