[Exim] blocking domain and/or user

Is there a way to block a specific email address or an entire domain?
If possible, to return the sender an email notifying them of the rejection.

Thanks



-------------------------------------------
Chris McKeever
If you want to reply directly to me, please use cgmckeever--at--prupref---dot---com
http://www.prupref.com




---- Prudential Preferred Properties www.prupref.com