Subject: Returned mail: see transcript for details

From: postmaster <[email-masked]>
Date: Tue, 14 Oct 2025 10:30:49 +0200

The original message was received at Tue, 14 Oct 2025 10:30:48 +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 [DB1PEPF00039232.eurprd03.prod.outlook.com 2025-10-14T08:30:49.614Z 08DE09DD3C13A5E3])

   ----- 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 [DB1PEPF00039232.eurprd03.prod.outlook.com 2025-10-14T08:30:49.614Z 08DE09DD3C13A5E3]
550 5.4.1 Recipient address rejected: Access denied. For more information see https://aka.ms/EXOSmtpErrors [DB1PEPF00039232.eurprd03.prod.outlook.com 2025-10-14T08:30:49.614Z 08DE09DD3C13A5E3]
<<< 503 5.5.2 Need rcpt command [DB1PEPF00039232.eurprd03.prod.outlook.com 2025-10-14T08:30:49.614Z 08DE09DD3C13A5E3]