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How can I learn more about email works. In this case how NDR works
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How can I learn more about email works. In this case how NDR works

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Here is a wiki about NDR's: &nbsp; <a href="http://en.wikipedia.org/wiki/Bounce_message" rel="ugc">http://en.wikipedia.org/wiki/Bounce_message</a><br />
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Here is a wiki about NDR's:   http://en.wikipedia.org/wiki/Bounce_message [http://en.wikipedia.org/wiki/Bounce_message]



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I will in a company that uses exchange and outlook 2007 as a client. &nbsp;When a user &nbsp;is no longer with the company, I will get an undeliverable message.<br />
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There are contacts outside of the email system that do not receive back non-deliverable notifications. &nbsp;<br />
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Why does this happen.
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I will in a company that uses exchange and outlook 2007 as a client.  When a user  is no longer with the company, I will get an undeliverable message.

There are contacts outside of the email system that do not receive back non-deliverable notifications.  

Why does this happen.

Non-deliverable notifications by Outside of email system

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.

Exchange

Microsoft Outlook is a personal information manager from Microsoft, available as a part of the Microsoft Office suite. Although often used mainly as an email application, it also includes a calendar, task manager, contact manager, note-taker, journal, and web browser.

Outlook

Microsoft Office is an integrated suite of applications that includes Outlook, Word, Excel, Access, PowerPoint, Visio and InfoPath, along with a number of tools to assist in making the individual components work together. Coding within and between the projects is done in Visual Basic for Applications, known as VBA.