Subject: Mail Delivery Failure

From: Mail Delivery System <[email-masked]>
Date: Thu, 18 Sep 2025 10:10:40 +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 [AM3PEPF0000A79B.eurprd04.prod.outlook.com 2025-09-18T10:10:40.270Z 08DDF4604CEF6530]

The message subject was: Installationstekniska åtgärder som sparar energi – gå kursen!
The message date was: Thu, 18 Sep 2025 12:10:37 +0200
The message identifier was: 40/A3-21375-0AADBC86
The message reference was: server-16.tower-872.messagelabs.com!1758190238!451799!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.