[Greylist-users] Do I have to compile Exim?

[chris at chrisbaker.net]

I have mainly tried to set up Exim 4.3 with graylisting as a "front door" 
to Exchange. What is the best way to do this? One person on the Exim 
group suggested doing LDAP queries. I have set this up, but Exim 
doesn't seem to know what LDAP is.

Is there a good way to set it up to forward the e-mail to our Exchange 
box? Is anyone else using a graylisting server as a "front door" in this 
manner?

Chris