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Not sure why you are looking to add a registry key. Have you tried checking/adjusting the below size limits. Default value is 10MB.<br />
<br />
Set-TransportConfig -InternalDsnMaxMessageAtta<wbr />chSize 5MB<br />
Set-TransportConfig -ExternalDsnMaxMessageAtta<wbr />chSize 5MB
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Not sure why you are looking to add a registry key. Have you tried checking/adjusting the below size limits. Default value is 10MB.

Set-TransportConfig -InternalDsnMaxMessageAttachSize 5MB
Set-TransportConfig -ExternalDsnMaxMessageAttachSize 5MB

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Hello,<br />
<br />
I have a situation in Exchange 2010 where we get sometimes a bounced email that comes back with an attachment and stays on the server. I'm trying to save some space. Came accross an article describing how to do it in Registry but I don't see referenced Dword &nbsp;<br />
Here is the link:<br />
<a href="http://searchexchange.techtarget.com/tip/Stripping-attachments-from-non-delivery-reports" rel="ugc">http://searchexchange.techtarget.com/tip/Stripping-attachments-from-non-delivery-reports</a><br />
<br />
Thanks for yoour help.<br />
<br />
SW
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Hello,

I have a situation in Exchange 2010 where we get sometimes a bounced email that comes back with an attachment and stays on the server. I'm trying to save some space. Came accross an article describing how to do it in Registry but I don't see referenced Dword  
Here is the link:
http://searchexchange.techtarget.com/tip/Stripping-attachments-from-non-delivery-reports

Thanks for yoour help.

SW

NDR attachment in Exchange 2010

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

A server is a computer program or a machine that waits for requests from other machines or software (clients) and responds to them. This architecture is called the client–server model. The clients may run on the same computer or may connect to the server over a network. The purpose of a server is to share data or hardware and software resources among clients. Typical computing servers are database servers, file servers, mail servers, print servers, web servers, game servers, and application servers.

Server Software

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.