On Fri, 1 Apr 2011 14:34:16 -0400 dar...@chaosreigns.com wrote: > Out of the 86,899 IPs I have data for, all but 38 are either 100% > spam or 100% ham,
That sounds a bit funny. We have data on over 17 million IP addresses (collected using http://mimedefang.org/reputation) Of those, about 9 million report at least one ham or one spam -- the remainder either never made it past greylisting or only tried emailing nonexistent recipient addresses. Of those 9,102,875 hosts: o 536,596 (5.8%) sent _only_ ham o 7,821,574 (86%) sent _only_ spam o The remaining 744,705 (8.2%) sent a mixture. Most Yahoo! servers are in this category. You saw less than 0.05% sending a mixture, which means you are probably not getting a good sample. Regards, David. PS: If anyone wants to contribute to and download *our* reputation list, please see http://mimedefang.org/reputation and email me off-list. Please be aware that unlike darxus' list, ours is not freely-available, though we generally give free downloads to organizations willing to feed us reputation data if they do a statistically-useful amount of mail (>= 50K messages/day).
