[OT] Software patents for the obvious (and not so obvious)

[Klaus-Peter Schrage]

Man-wai Chang wrote:
> I don't know why the sender be identified when you are really trying to
> block spam. If you are to do it against IP/person, the ISP should take
> up the job via their DHCP records. Do we need sender ID?

See eg
http://www.ietf.org/html.charters/marid-charter.html
http://www.ietf.org/internet-drafts/draft-atkinson-callerid-00.txt
Klaus