Subject: Mail Delivery Failure

From: Mail Delivery System <[email-masked]>
Date: Mon, 25 Aug 2025 06:19:47 +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 [DU2PEPF00028D0E.eurprd03.prod.outlook.com 2025-08-25T06:19:47.201Z 08DDE2797AAF962A]

The message subject was: Introduktionskurs om byggnaders klimatpåverkan och uppföljande fördjupningskurser
The message date was: Mon, 25 Aug 2025 08:19:44 +0200
The message identifier was: FD/19-29923-2800CA86
The message reference was: server-6.tower-855.messagelabs.com!1756102784!137680!1

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