Subject: Mail delivery failed: returning message to sender

From: Mail Delivery System <[email-masked]>
Date: Wed, 03 Sep 2025 23:13:36 -0700

This message was created automatically by mail delivery software.

A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:

  [email-masked]
    host brunnbergoforshed-se.mail.protection.outlook.com [52.101.68.0]
    SMTP error from remote mail server after RCPT TO:<[email-masked]>:
    550 5.4.1 Recipient address rejected: Access denied. For more information see https://aka.ms/EXOSmtpErrors [DU6PEPF00009529.eurprd02.prod.outlook.com 2025-09-04T06:13:36.750Z 08DDE268B9A8F760]