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SIQuery & Response UDP Packets

Server Index Query Protocol for Email Reputation & Identity Presented by April Lorenzen of Server Authority Inc. SIQuery & Response UDP Packets. UDP w/HTTP fallback Exponential backoff retries Handles IPv6 & IPv4 addresses Query ID, version, and query type housekeeping bits

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SIQuery & Response UDP Packets

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  1. Server Index Query Protocolfor Email Reputation & IdentityPresented by April Lorenzen of Server Authority Inc

  2. SIQuery & ResponseUDP Packets • UDP w/HTTP fallback • Exponential backoff retries • Handles IPv6 & IPv4 addresses • Query ID, version, and query type housekeeping bits • Flexible for wide variety of reputation data transmission

  3. SIQueries in Production Use • SIQ clients & servers have exchanged approx. 9 million queries and responses in production use since July 2003 • Multiple SIQ clients in France have successfully received responses from SIQ server in USA (approx. 2 million queries thus far) • Sendmail milters for the SIQ protocol include a GPL'd Python version and a non-GPL C version • SIQ plug-in for Microsoft Exchange is in active development

  4. Fowarding is an Issue in Reputation Systems A reputation system that scores an IP address and a domain together should be skipped if the message is coming from a forwarding service or forwarded account Simple public domain mechanisms such as VARA (Verified and Recipient Authorized) are needed to determine when the reputation server query should be skipped

  5. VARA - Simple Public Domain Solution to the Forwarding Problem

  6. Who is developing SIQ protocol reputation services • OutboundIndex.org – service available now • Return Path – evaluating SIQ for a new reputation service • David Hohn of Uptime.at and Philipp Baer of Npw.net announced the intention to write an open source SIQ server and operate a free reputation service. • Petru Paler has expressed interest in creating an SIQ protocol interface for GOSSiP

  7. wiki.OutboundIndex.net/ProtocolDiscussion or type SIQ protocol into most any search engine Internet-Draft http://www.ietf.org/internet-drafts/draft-irtf-asrg-iar-howe-siq-00.txt FOR MORE INFORMATION

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