DKIM signatures with DCC

> At my organization, people complain about receiving spam.  They want
> me to stop it.  I wonder if they are also willing to pay.

Of course not.  The essence of Internet Economics is to foist your costs 
off on someone else.  That's why we have spam in the first place.

> In any case, I see now that waiting for somebody to compile a reputation 
> database is futile.

People are building them, but I doubt you'll find many being given away 
for free.

R's,
John