Subject: Returned mail: see transcript for details

From: postmaster <[email-masked]>
Date: Tue, 11 Nov 2025 10:03:20 +0100

The original message was received at Tue, 11 Nov 2025 10:02:45 +0100
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 [AMS1EPF00000049.eurprd04.prod.outlook.com 2025-11-11T09:03:20.497Z 08DE1F2CE66939E1])

   ----- 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 [AMS1EPF00000049.eurprd04.prod.outlook.com 2025-11-11T09:03:20.497Z 08DE1F2CE66939E1]
550 5.4.1 Recipient address rejected: Access denied. For more information see https://aka.ms/EXOSmtpErrors [AMS1EPF00000049.eurprd04.prod.outlook.com 2025-11-11T09:03:20.497Z 08DE1F2CE66939E1]
<<< 503 5.5.2 Need rcpt command [AMS1EPF00000049.eurprd04.prod.outlook.com 2025-11-11T09:03:20.498Z 08DE1F2CE66939E1]