[exim] block replies only

Is it possible to block reply emails only to a single address but not
the original emails please ?
So if you send me a new email that is fine I then reply to your email I
do not want a reply back to that. I would need to forward it else where.
We are basically trying to automate some thing but running into problems
when people reply so if I could do some thing server end that would be
handy

Thank you