Re: [exim] Greylistd

On Wed, Nov 29, 2006, Dean Brooks wrote:
> I also think it is a significant mistake to only retain the
> information for 24 hours. If a server is proven to retry, why would
> you continue to greylist? At that point, the *only* thing you are
> accomplishing is delaying email. It is better to leave the
> information in there for 30 to 60 days, in my opinion, if you know the
> server will retry properly.

Keeping white states for 30+ days has one certain merit - monthly
mailing list digests won't be throttled into oblivion.

My approach is keeping white entries for 36 days and temporarily
whitelisting hosts that push 5 messages into the white state.