Lars,
Thanks greatly for the list. I think it is more than sufficient
for our purposes. It looks to me like there are two major sources of
non compliance - Yahoo groups and ezmln. The second is the trickier
since there is only one Yahoo groups to deal with and we have their
email addresses.
Sure we can get carried away and do a full rigorous academic
research project here, but this tells me what I need to know, we are
at about 80% compliance and we can get to 95% compliance by addressing
one software platform and one service. That looks pretty encouraging to
me.
Even given the measurement biases that are inevitable with
a single point sample worst case we are likely to see would be
60% in compliance today and the opportunity to get to 90% easily.
Back in the early days of the Web there was a couple of profs
making academic hay criticising a Gallup survey of Internet users,
they identified biases that might mean the survey was out by 25% or
more, this when the Internet was growing by 20% PER MONTH. Like
a 25% systematic bias was relevant..
Phill
How many mailing lists do you know of that don't already set the
envelope from address?
How many mailing lists do you know of that don't already set the
Sender: or Resent-* headers?
I've done a quick peek at a few messages from each of the mailing
list types that I have registered on Gmane, and here's the result:
sender MAIL FROM
mailman 3346 y y
ecartis 115 y y
autoshare 1 n y
lyris 13 n y
communigate 5 y y
listar 46 y y
smartlist 15 y y (also sets Resent-Sender)
smartgroups 7 n y
yahoogroups 249 n y
topica 12 n y
cz 1 n y
majordomo 606 y y
letterrip 1 y y
petidomo 1 y y
minimalist* 12 n sort of
sympa 49 n y
listserv 8 y y
listserv-name 81 y y
listproc 10 y y
fml 23 n y
listguru 1 y y
ezmlm 689 n y
listbox 4 y y
imail 1 y y