Subject: Returned mail: see transcript for details

From: postmaster <[email-masked]>
Date: Mon, 20 Oct 2025 14:56:26 +0200

The original message was received at Mon, 20 Oct 2025 14:56:17 +0200
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 [DU2PEPF0001E9C0.eurprd03.prod.outlook.com 2025-10-20T12:56:26.612Z 08DE0EA485B6DF03])

   ----- Transcript of session follows -----
... while talking to skurup.se.:
>>> DATA
<<< 550 5.4.1 Recipient address rejected: Access denied. For more information see https://aka.ms/EXOSmtpErrors [DU2PEPF0001E9C0.eurprd03.prod.outlook.com 2025-10-20T12:56:26.612Z 08DE0EA485B6DF03]
550 5.4.1 Recipient address rejected: Access denied. For more information see https://aka.ms/EXOSmtpErrors [DU2PEPF0001E9C0.eurprd03.prod.outlook.com 2025-10-20T12:56:26.612Z 08DE0EA485B6DF03]
<<< 503 5.5.2 Need rcpt command [DU2PEPF0001E9C0.eurprd03.prod.outlook.com 2025-10-20T12:56:26.612Z 08DE0EA485B6DF03]