On Tue, 18 Jul 2006 10:56:12 -0400, "Eric S. Johansson" <esj@xxxxxxxxxx> said: > this occurred to me quite a long time ago but I never wrote it down. > If instead of using DNS, we used a simple server (Web, XML RPC) and > the request returned the number of bits of stamp that IP address > should calculate in order to successfully pass the filter on the far > side. This could also be used to allow different users to set their own required stamp sizes, if they're not happy with the domain default. Hubert