Subject: Mail Delivery Failure

From: Mail Delivery System <[email-masked]>
Date: Mon, 06 Oct 2025 06:01:28 +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 [AM4PEPF00027A5D.eurprd04.prod.outlook.com 2025-10-06T06:01:28.519Z 08DE034C8A37FBD3]

The message subject was: Lär dig energieffektivisera byggnadens installationssystem
The message date was: Mon, 06 Oct 2025 08:01:19 +0200
The message identifier was: 33/9F-07206-13B53E86
The message reference was: server-25.tower-830.messagelabs.com!1759730479!120291!1

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