Earlier this week I posted the SIQ protocol draft 02 with the IETF and its now available online:

http://www.ietf.org/internet-drafts/draft-irtf-asrg-iar-howe-siq-02.txt

Abstract

   The Server Index Query (SIQ) protocol is intended to provide a
   standard means by which a mail exchange (MX) server can query
   one or more external services for scoring based on facts or
   reputation of an  IP/domain pair. This document specifies the
   communication protocol  used to transmit the IP/domain query
   and return the query response.  The implementation, correctness
   of results, and/or management of SIQ servers is beyond the
   scope of this document.

This draft incorporates much of the technical feedback given to me by Eric Allmann after the Sendmail Meeting of The Minds in San Francisco in July.

So far, Eric has been the only one to provide any actual  technical commentary and impressions about this protocol since it was first submitted to the IETF this time last year. I had hoped this past year to have had more feedback about SIQ or alternatives through ASRG IAR subgroup, which initially appeared to be the appropriate place for such discussions, but alas it appears that the IAR mailing list members have gone dumb through lack any interesting & fiery controversy worth arguing about.

I hope some of the more techinical amoung you will review it and post comments and/or alternatives here. I think its in the Internet's best interest that those interested in reputation systems and services develop an open and public protocol that can be used to implement the communication infrastructure for reputation query clients, caches, and servers.