Subject: Returned mail: see transcript for details

From: postmaster <[email-masked]>
Date: Mon, 18 Aug 2025 08:30:30 +0200

The original message was received at Mon, 18 Aug 2025 08:29:56 +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 [DU6PEPF0000A7E1.eurprd02.prod.outlook.com 2025-08-18T06:30:30.046Z 08DDDC25F3AFC0BC])

   ----- Transcript of session follows -----
... while talking to gavle.se.:
>>> DATA
<<< 550 5.4.1 Recipient address rejected: Access denied. For more information see https://aka.ms/EXOSmtpErrors [DU6PEPF0000A7E1.eurprd02.prod.outlook.com 2025-08-18T06:30:30.046Z 08DDDC25F3AFC0BC]
550 5.4.1 Recipient address rejected: Access denied. For more information see https://aka.ms/EXOSmtpErrors [DU6PEPF0000A7E1.eurprd02.prod.outlook.com 2025-08-18T06:30:30.046Z 08DDDC25F3AFC0BC]
<<< 503 5.5.2 Need rcpt command [DU6PEPF0000A7E1.eurprd02.prod.outlook.com 2025-08-18T06:30:30.047Z 08DDDC25F3AFC0BC]