Subject: Undeliverable mail: Get Ready for a Cool New Experience in Copenhagen!

From: "Mail Delivery Subsystem" <[email-masked]>
Date: Tue, 19 Aug 2025 09:03:40 -0400

Failed to deliver to [email-masked]'
SMTP module(domain helmsbriscoe-com.mail.protection.outlook.com:25) reports:
 host helmsbriscoe-com.mail.protection.outlook.com:25 says:
 550 5.4.1 Recipient address rejected: Access denied. For more information see https://aka.ms/EXOSmtpErrors [SJ1PEPF000023D1.namprd02.prod.outlook.com 2025-08-19T13:04:57.345Z 08DDDBFF6FFD3AE6]