Subject: Mail delivery failed: returning message to sender

From: Mail Delivery System <[email-masked]>
Date: Sun, 11 May 2025 23:14:29 -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 [52.101.73.2]
    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 [AM1PEPF000252E0.eurprd07.prod.outlook.com 2025-05-12T06:14:29.567Z 08DD8B0DF12E45C2]