Subject: Returned mail: see transcript for details

From: postmaster <[email-masked]>
Date: Thu, 15 Jan 2026 12:11:49 +0100

The original message was received at Thu, 15 Jan 2026 12:11:48 +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 [AM4PEPF00027A6C.eurprd04.prod.outlook.com 2026-01-15T11:11:49.580Z 08DE4EAB140E3EFD])

   ----- 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 [AM4PEPF00027A6C.eurprd04.prod.outlook.com 2026-01-15T11:11:49.580Z 08DE4EAB140E3EFD]
550 5.4.1 Recipient address rejected: Access denied. For more information see https://aka.ms/EXOSmtpErrors [AM4PEPF00027A6C.eurprd04.prod.outlook.com 2026-01-15T11:11:49.580Z 08DE4EAB140E3EFD]
<<< 503 5.5.2 Need rcpt command [AM4PEPF00027A6C.eurprd04.prod.outlook.com 2026-01-15T11:11:49.580Z 08DE4EAB140E3EFD]