Milter-greylist

Hi 

Now that the scallability problem has been somewhat handled, I think about
pushing a new stable release. Of course this means testing latest 1.3.x
code a bit, and before that, implementing the most-wanted-but-easy-to-implement
features. Complicated stuff will be worked on after 1.4 will be out.

So, what's the most-wanted-but-easy-to-implement features? On the to do 
list, I have:
1) DNS support in greylist.conf
The idea is to whitelist an IP address or a domain. Example:
domain /.*netbsd\.org/

This could be implemented by doing a gethostbyaddr() on the sender IP 
address and checking the enaswers (primary address and aliases) against
the regex. That does not look very complicated, but I suspect we can run 
into DNS resolver thread-safety and performance slowdown because of DNS 
lookups. Maybe this should be dealt after 1.4

2) per-user configuration
Definitively an intrusive modification, for after 1.4

3) config file option for greylist entries timeout
Already done for upcoming 1.3.4

More ideas? Opinions? Thoughts? 

-- 
Emmanuel Dreyfus
manu@...