Exchange 2010 Multiple email domains

I have exchange 2010 running with 2 different email domains.   and

If someone sends an email to a non-existent email address the NDR that is returned is from it is 2 different organizations so we need the NDR to be from, is this possible?

Thanks in Advance

Who is Participating?
Simon Butler (Sembee)ConsultantCommented:
The only way I am aware of is via third party:

hpeetAuthor Commented:
Sorry for the delay in accepting, was away.

Thanks for pointing me in the right direction.

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