[Greylist-users] relay identification

[martin dempsey]

> . In a sweep cleaning up stale triples, I collected the IPs of all sites
> with 2 or more successful relays and stored those.  Things like Yahoo
> relays will probably appear in such lists.
>
> . The filter will accept messages, even the first one, from such "known
> good" relays.

For how long? It appears you are permanently whitelisting all those IP 
addresses. IP addresses are reused when, say, companies change ISPs. One 
issue with your approach is that any spammer getting one of those ip 
addresses has a permanent free pass to spam your users.