My Exchange 2010 box is not sending external NDRs Help!

As subject really we only accept messages up to 12000KBs but since migrating to 2010 externals have stopped getting bounce messages.

I have checked they are not being stopped by our spam filter.

Where are the settings for NDRs in Ex2010 I can't find them anywhere?

Cheers,
S.
Sam_RendellAsked:
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endital1097Connect With a Mentor Commented:
get-transportconfig

use set-transportconfig to update
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Sam_RendellAuthor Commented:
Which bit of get-transportconfig tells me if it is set to send an NDR?
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endital1097Commented:
GenerateCopyOfDSNFor                                 : {5.4.8, 5.4.6, 5.4.4, 5.2.4, 5.2.0, 5.1.4}
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Sam_RendellAuthor Commented:
That is exactly what mine shows. Which code is for oversized attachment?

If that is set correctly something else must be screwing up the NDRs.
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endital1097Commented:
5.2.4
looking for additional settings
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endital1097Commented:
Get-RemoteDomain | fl DomainName,NDREnabled
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Sam_RendellAuthor Commented:
I noticed that the external postmaster address was empty so I have filled that in and restarted the Exchange service host. Externals now get NDRs.

I ran the cammand above it returned true.

Thanks for your help.
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