Milter-greylist

On Mon, Oct 24, 2005 at 05:16:20PM -0200, Raul Dias wrote:
> I am wondering why the greylist_delay time is 30m by default.
> Everybody keeps this way or change to something better?
> 
> Is there any spammer retrying/queueing the 4xx messages for a later
> retry, but giving up before 30 minutes?

I regularly see individual spam sources send out bursts spread over
about eight minutes. When I used a two-minute greylist delay, I'd still
get several copies of the spams. At my site, a ten-minute delay cuts
pretty much everything that greylisting could cut.

-- 
William Aoki     KD7YAF    waoki@...    5-1924