my exchange 2000 server is not sending bouncebacks

My exchange 2000 server is not sending bouncebacks when someone sends to an unresolved receipient. Where do I check to see if this is enabled?
pdiblasiAsked:
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twospeed9238Commented:
It in the System Manager under Global Setting\Internet Message Formats.  Right Click the format you want to check (like "Default") click "Properties" and then click the "Advanced" tab.  If you turn on NDRs to the Internet, however, you might get spammers using your server.

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Windows 2000

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