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it simply means that the receiving email server rejected your email, if you have the rest of the NDR maybe we can help more.<br />
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is this user hosted on your mail server or a 3rd party ?
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it simply means that the receiving email server rejected your email, if you have the rest of the NDR maybe we can help more.

is this user hosted on your mail server or a 3rd party ?

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I answered the question - you cannot change the NDR.
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I answered the question - you cannot change the NDR.

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Online (Online@--.com)<br />
Your message wasn't delivered because the recipient's e-mail provider rejected it.<br />
<br />
<br />
Who can help &nbsp;me to change the above text to something more meaningful to the user.
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Online (Online@--.com)
Your message wasn't delivered because the recipient's e-mail provider rejected it.


Who can help  me to change the above text to something more meaningful to the user.

Delivery has failed to these recipients or groups:

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

Within Internet message handling services (MHS), a message transfer agent or mail transfer agent (MTA) or mail relay is software that transfers electronic mail messages from one computer to another using a client–server application architecture. A MTA implements both the client (sending) and server (receiving) portions of the Simple Mail Transfer Protocol (SMTP). The terms mail server, mail exchanger, and MX host may also refer to a computer performing the MTA function. The Domain Name System (DNS) associates a mail server to a domain with mail exchanger (MX) resource records containing the domain name of a host providing MTA services.