[Shifting from the legal and political issue...]
On Tue, Aug 24, 2004 at 02:01:47PM -0700,
George Mitchell <george(_at_)m5p(_dot_)com> wrote
a message of 61 lines which said:
* SPF+SRS is embodied in working code. (Two widely publicized
implementations, and there are probably others.)
* SPF+SRS is deployed.
* SPF+SRS is not encumbered by any intellectual property claims.
SPF is coded and deployed. SRS is much less common (IMHO the SUBMITTER
extension could make SRS unnecessary).