Subject: Returned mail: see transcript for details

From: postmaster <[email-masked]>
Date: Tue, 20 Jan 2026 12:12:12 +0100

The original message was received at Tue, 20 Jan 2026 12:12:12 +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 [DB1PEPF000509EE.eurprd03.prod.outlook.com 2026-01-20T11:12:12.691Z 08DE54607E2B1824])

   ----- 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 [DB1PEPF000509EE.eurprd03.prod.outlook.com 2026-01-20T11:12:12.691Z 08DE54607E2B1824]
550 5.4.1 Recipient address rejected: Access denied. For more information see https://aka.ms/EXOSmtpErrors [DB1PEPF000509EE.eurprd03.prod.outlook.com 2026-01-20T11:12:12.691Z 08DE54607E2B1824]
<<< 503 5.5.2 Need rcpt command [DB1PEPF000509EE.eurprd03.prod.outlook.com 2026-01-20T11:12:12.692Z 08DE54607E2B1824]