Subject: Mail Delivery Failure

From: Mail Delivery System <[email-masked]>
Date: Thu, 11 Sep 2025 09:02:16 +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 [DB5PEPF00014B8D.eurprd02.prod.outlook.com 2025-09-11T09:02:16.363Z 08DDF01AF5D5D837]

The message subject was: Kurs om hur man driftoptimerar och energieffektiviserar byggnader med installationstekniska åtgärder
The message date was: Thu, 11 Sep 2025 08:13:28 +0200
The message identifier was: D4/9A-29928-81092C86
The message reference was: server-26.tower-872.messagelabs.com!1757581334!151447!1

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