Subject: Mail Delivery Failure

From: Mail Delivery System <[email-masked]>
Date: Tue, 14 Oct 2025 08:30:53 +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 [AMS0EPF00000190.eurprd05.prod.outlook.com 2025-10-14T08:30:53.295Z 08DE07FC6B7053F9]

The message subject was: Den mest lönsamma energisparåtgärden är ...
The message date was: Tue, 14 Oct 2025 10:30:38 +0200
The message identifier was: A9/06-19999-D3A0EE86
The message reference was: server-3.tower-837.messagelabs.com!1760430650!4761!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.