From: Erwan David (erwanrail.eu.org)
Date: Wed Apr 30 2008 - 08:03:46 CDT

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On Wed, Apr 30, 2008 at 02:58:16PM CEST, Terry Carmen <terrycnysupport.com> said:
>
> We tried greylisting. It's a little helpful, but the delay was really
> annoying the users. And for large companies that bounce outbound mail
> around to multiple servers after a 4xx reject, some messages would never
> get through because the greylist time would expire before that
> sender/recipient/sending ip came back around.

The fact is that filtering decisions are hard to take, because of the
false positive, and finaly depends on what you are ready to loose in
the fitering. Each decision is unique, but must be taken while
thunking to all implications

--
Erwan

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