Subject: [Postmaster] Email Delivery Failure

From: "IT Service Desk (UK)" <[email-masked]>
Date: Thu, 15 Jan 2026 13:42:00 +0000

This is a delivery failure notification message indicating that
an email you addressed to email address :
-- [email-masked]

could not be delivered. The problem appears to be :
-- Recipient email address is possibly incorrect

Additional information follows :
-- 5.4.1 Recipient address rejected: Access denied. For more information see https://aka.ms/EXOSmtpErrors [DB1PEPF0003922F.eurprd03.prod.outlook.com 2026-01-15T13:41:31.766Z 08DE5409B3676562]

This condition occurred after 1 attempt(s) to deliver over
a period of 0 hour(s).

If you sent the email to multiple recipients, you will receive one
of these messages for each one which failed delivery,  otherwise
they have been sent.