Subject: Mail Delivery Failure

From: Mail Delivery System <[email-masked]>
Date: Mon, 15 Sep 2025 05:00:37 +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 [AM3PEPF0000A798.eurprd04.prod.outlook.com 2025-09-15T05:00:37.810Z 08DDF25393CE92CD]

The message subject was: Kurs om hur man driftoptimerar och energieffektiviserar byggnaders installationssystem
The message date was: Mon, 15 Sep 2025 07:00:34 +0200
The message identifier was: 47/13-29923-57D97C86
The message reference was: server-25.tower-850.messagelabs.com!1757912435!74602!1

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