Exchange 2010 - Prevent sending to a particular email address

Hi,
Within Exchange 2010, is it posssible to prevent anyone within my organisation from sending email to a particular email address - i.e. it would just NDR it back to the user if they tried?
Many thanks
clogau_goldAsked:
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AkhaterConnect With a Mentor Commented:
yes sure

open EMC -> org config -> Hub -> Transport Rules

and create a new rule

In the condition say : emails sent from Inside my organization sent to and specifiy the user

in the Action Send rejection message to sender with enhanced status code
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clogau_goldAuthor Commented:
Perfect, thanks!
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