Subject: Undeliverable: Kurs om tappvattensystem - energieffektivisering och legionella

From: Postmaster <[email-masked]>
Date: Thu, 08 Jan 2026 08:01:54 +0100

This is the mail system at host smtp.falkenberg.se.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

<[email-masked]> failed: host
 falkenbergskommun.mail.protection.outlook.com (52.101.73.19) said: 550 5.4.1
 Recipient address rejected: Access denied. For more information see
 https://aka.ms/EXOSmtpErrors [AMS1EPF00000047.eurprd04.prod.outlook.com
 2026-01-08T07:01:54.863Z 08DE4E328868DE4D] (in reply to RCPT command)