A New Internet-Draft is available from the on-line Internet-Drafts directories.
Abstract: «This document describes in detail a method for encapsulating an email message or text sample for the purpose of training (or “inoculating”) a mail filter. The sample messages or text (the “payload”) provide the contextual information necessary for the filter to reject (”spam”) or accept (”non-spam”) the message being inoculated, or messages similar in design.»
«RFC 2045 defines the MIME format. This document expands on this by adding an “inoculation” MIME subtype, and also adds additional header fields necessary to the functionality being provided.»
«This message format is designed to enable different mail filters of different design to communicate inoculations with one another using the MIME subtype introduced.»
http://www.ietf.org/internet-drafts/draft-yerazunis-spamfilt-inoculation-03.txt