[exim] Reject mail based on DKIM

Hi,

In an effort to fight spam, can someone suggest a ACL that will reject any
mail signed with a specific DKIM?

I have spam incoming that is signed with a static DKIM, but sender /
envelopes seems to be random rubish... Would be good to be able to just
reject the mail if signed with a specific DKIM in this case.


--

Regards,
Chris Knipe