Subject: Returned mail: see transcript for details

From: postmaster <[email-masked]>
Date: Mon, 15 Sep 2025 09:13:02 +0300

The original message was received at Mon, 15 Sep 2025 09:13:02 +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 [AM3PEPF00009B9C.eurprd04.prod.outlook.com 2025-09-15T06:13:02.704Z 08DDF2537C53ACA2])

   ----- 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 [AM3PEPF00009B9C.eurprd04.prod.outlook.com 2025-09-15T06:13:02.704Z 08DDF2537C53ACA2]
550 5.4.1 Recipient address rejected: Access denied. For more information see https://aka.ms/EXOSmtpErrors [AM3PEPF00009B9C.eurprd04.prod.outlook.com 2025-09-15T06:13:02.704Z 08DDF2537C53ACA2]
<<< 503 5.5.2 Need rcpt command [AM3PEPF00009B9C.eurprd04.prod.outlook.com 2025-09-15T06:13:02.704Z 08DDF2537C53ACA2]