[exim] Lookup domain before delivery

Hi,

I would like exim to verify that the domain DNS **really** resolves to the
local computer before delivering locally.

Example (very far fetched example): if say I set a hotmail.com domain on my
machine it will deliver any xyz@??? message locally without
verifying the real DNS setup. So the real xyz@??? user will never
receive the message.

QUESTION: Is there a way to tell exim to lookup the domain before delivery?

thanks for your help.


note: we setup domains on our server that are not yet moved or for testing
reasons...