On 26 September 2007, Liviu Daia  wrote:

quoted text
> On 26 September 2007, Luca Corti  wrote:

> > On Wed, 2007-09-26 at 17:02 +0300, Liviu Daia wrote:

> > > > Another delivery attempt would be needed after this time to pass

> > > > spamd.

> > >     Moral: randomize the greylisting time...

> >

> > Between which min/max valuse? Keep in mind that this corresponds to

> > the (minimum) delay introduced in delivering a good messages to the

> > mailbox.

>

>     That's up to you.  The minimum should be large enough to keep away

> "naive" bots, as it does now.  The maximum should be as large as you

> can afford without being too anti-social. :) Some crap will still pass

> through anyway.

    The maximum should also leave plenty of time before expiry.  Some

mailers use queue backoff algorithms, which means some legitimate

messages might never get a chance to pass if the window is too small...
    Regards,
    Liviu Daia
--

Dr. Liviu Daia                                  http://www.imar.ro/~daia