Subject: Mail Delivery Failure

From: Mail Delivery System <[email-masked]>
Date: Thu, 11 Sep 2025 06:12:07 +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 [AMS0EPF00000194.eurprd05.prod.outlook.com 2025-09-11T06:12:07.652Z 08DDF08E8141CF01]

The message subject was: Kurs om hur man driftoptimerar och energieffektiviserar byggnader med installationstekniska åtgärder
The message date was: Thu, 11 Sep 2025 08:12:04 +0200
The message identifier was: 3C/02-27145-73862C86
The message reference was: server-2.tower-830.messagelabs.com!1757571125!52591!1

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