Wasn't there a lot of turmoil within the IETF last year on sender authentication because Microsoft was trying to push it's own sender ID authetication mechasnisms as a draft standard?
In part the problem was 'legal' (versus technical)...the folks involved in the working list from MS...technical people, offered ongoing reassurance that the as-yet-unpublished patent apps were benign, that it would always be available free, etc. etc... but once the patent apps were published, they were far over-reaching, included SPF aspects, etc.. (I have _zero_ doubt that the legal/corporate folks upstairs at MS were responsible for that, and that the good folks from MS on the working list were as surprised as were the rest of us). Anne Anne P. Mitchell, Esq. President/CEO Institute for Spam and Internet Public Policy IADB Email Sender Accreditation Database: http://www.isipp.com/iadb.php Professor of Law, Lincoln Law School of SJ Advisor, Kinar Secure Email Advisor, Relemail Email Privacy Certification Advisor, Virus Bulletin Asilomar Microcomputer Workshop Planning Committee