Milter-greylist

>now. What syntax would you propose for configuring reverse greylisting
>in greylist.conf?

Probably something simple like;

method normal|reverse


and if fallback to subnetmatch was implemented in the event of 
reverse lookup failure, then that too could be optional using:

reverse_fallback yes|no

and if 'yes' then subnetmatch would also have to be set.

I haven't a clue how to implement any of this though. It's been a 
long time since I was at uni, and my C/C++ skills aren't worth talking about :\

Collin