Subject: Mail Delivery Failure

From: Mail Delivery System <[email-masked]>
Date: Thu, 15 Jan 2026 11:11:13 +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 [AM2PEPF0001C713.eurprd05.prod.outlook.com 2026-01-15T11:11:13.579Z 08DE4E74A1BFBC85]

The message subject was: Lär dig energieffektivisera byggnadens installationssystem
The message date was: Thu, 15 Jan 2026 12:11:09 +0100
The message identifier was: 11/9C-17649-15BC8696
The message reference was: server-14.tower-878.messagelabs.com!1768475470!15612!1

Please do not reply to this email as it is sent from an unattended mailbox.
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