Milter-greylist

Hi,

I use uribl to score emails in SA. What I'd like to do is just drop any emails
that exist in URIBL_BLACK (the blacklist category of uribl).

I'm looking for a way to do this and am wondering if milter-greylist can do it?

I don't think it can because a message needs to be accepted first, scanned to
query the URI in it against multi.dnsbl.com and then perform an appropriate
action.

But I thought I'd ask anyway as maybe someone can recommend a solution to do this?

Thanks.

Michael.