On Fri, 17 Aug 2007, John C Klensin wrote: > > One could preserve the relaying by turning message transmission > and delivery into a multiple-stage handshake: > * Message notifying recipient of availability > * Message from recipient to store asking for > transmission of the real message > * Transmission of the real message I don't understand how it can be easier to do anti-spam checks in an IM2000 design than in current email. The check has to be performed during the first step otherwise you have already lost, but the notification has fewer clues for an AI to work with. Tony. -- f.a.n.finch <dot@xxxxxxxx> http://dotat.at/ IRISH SEA: SOUTHERLY, BACKING NORTHEASTERLY FOR A TIME, 3 OR 4. SLIGHT OR MODERATE. SHOWERS. MODERATE OR GOOD, OCCASIONALLY POOR. _______________________________________________ Ietf@xxxxxxxx https://www1.ietf.org/mailman/listinfo/ietf