Message

Delivery Status Notification (Failure)

From: Mail Delivery Subsystem <[email protected]>

** Address not found **

Your message wasn't delivered to [email protected] because the address couldn't be found, or is unable to receive mail.

Learn more here: https://aka.ms/EXOSmtpErrors
(Warning: This link will take you to a third-party site)

The response from the remote server was:
550 5.4.1 Recipient address rejected: Access denied. For more information see https://aka.ms/EXOSmtpErrors [BN2PEPF00004FBC.namprd04.prod.outlook.com 2025-12-17T00:55:23.339Z 08DE3AF5A36B39AC]


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Address not found
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Your message wasn't delivered to <a style='color:#212121;text-decoration:none'><b>[email protected]</b></a> because the address couldn't be found, or is unable to receive mail.
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<a style="text-decoration:none" href="https://aka.ms/EXOSmtpErrors">LEARN MORE</a>
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This link will take you to a third-party site
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The response from the remote server was:<br/>
<p style="font-family:monospace">
550 5.4.1 Recipient address rejected: Access denied. For more information see https://aka.ms/EXOSmtpErrors [BN2PEPF00004FBC.namprd04.prod.outlook.com 2025-12-17T00:55:23.339Z 08DE3AF5A36B39AC]
</p>
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Final-Recipient: rfc822; [email protected]
Action: failed
Status: 5.4.1
Remote-MTA: dns; echo-com.mail.protection.outlook.com. (2a01:111:f403:f909::,
 the server for the domain echo.com.)
Diagnostic-Code: smtp; 550 5.4.1 Recipient address rejected: Access denied. For more information see https://aka.ms/EXOSmtpErrors [BN2PEPF00004FBC.namprd04.prod.outlook.com 2025-12-17T00:55:23.339Z 08DE3AF5A36B39AC]
Last-Attempt-Date: Tue, 16 Dec 2025 16:55:23 -0800 (PST)

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 5a478bee46e88-2ac363a9425mr7517816eec.12.1765932921993; Tue, 16 Dec 2025
 16:55:21 -0800 (PST)
MIME-Version: 1.0
From: Isaac Shoff <[email protected]>
Date: Wed, 17 Dec 2025 01:55:10 +0100
X-Gm-Features: AQt7F2osx8kufrlzxQEP6BX3VCltW8sygtUeqs3vLEqIFgiz4ZxaJilcLUa4wss
Message-ID: <CAP_q6mVE_ReEtcD1mL3=g2AF=4mtrrKfGYn_a3Gu4EgemG4hSw@mail.gmail.com>
Subject: Doug, wanted to connect about your leadership at echo
To: [email protected]
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