Subject: Returned mail: see transcript for details

From: postmaster <[email-masked]>
Date: Mon, 12 May 2025 09:24:16 +0300

The original message was received at Mon, 12 May 2025 09:24:15 +0300
from:
<[email-masked]>

   ----- The following addresses had permanent fatal errors -----
<[email-masked]>
    (reason: 550 5.4.1 Recipient address rejected: Access denied. For more information see https://aka.ms/EXOSmtpErrors [DB5PEPF00014B92.eurprd02.prod.outlook.com 2025-05-12T06:24:16.596Z 08DD8B089F880B1D])

   ----- Transcript of session follows -----
... while talking to strangbetong.se.:
>>> DATA
<<< 550 5.4.1 Recipient address rejected: Access denied. For more information see https://aka.ms/EXOSmtpErrors [DB5PEPF00014B92.eurprd02.prod.outlook.com 2025-05-12T06:24:16.596Z 08DD8B089F880B1D]
550 5.4.1 Recipient address rejected: Access denied. For more information see https://aka.ms/EXOSmtpErrors [DB5PEPF00014B92.eurprd02.prod.outlook.com 2025-05-12T06:24:16.596Z 08DD8B089F880B1D]
<<< 503 5.5.2 Need rcpt command [DB5PEPF00014B92.eurprd02.prod.outlook.com 2025-05-12T06:24:16.596Z 08DD8B089F880B1D]