I think it would also be useful to have as part of the discussion some
real world folk (presumably big ISPs, big DNS outsourcers, or the like)
who's life would actually really and truly become unbearable were we to
lack wildcard support at all. ...
Given that there are lots of people using wildcard MXes right now, I
think you need to offer a plausible argument that people wouldn't
object to losing a existing working facility, rather than the other
way around.
Here's a bunch of domains with wildcard MXes, either directly or via a
CNAME, who you might want to check with. Start with the ones at the
end.
Regards,
John Levine, johnl(_at_)taugh(_dot_)com, Taughannock Networks, Trumansburg NY
http://www.taugh.com
0711-newsweek.de
about.com
adifferentdrum.com
almond.nuts.com
aspidistra.com
avir.sk
azet.sk
buddhismemaitreya.org
castorsystem.com.pl
centrallove.com
deseti-prsty.cz
divadlojablonec.cz
exclusiveresources.com
firstlovesite.com
foredu.com.cn
front.ru
guest.com
hiebert.com
hotbox.ru
houtai.com
internet.com
johncornwell.com
krovatka.net
land.ru
livejournal.com
mail15.com
mail333.com
mailAccount.com
moerf.de
newmail.ru
nm.ru
numail.co.uk
nuts.com
pathbot.com
pisem.net
pochtamt.ru
politikon.cz
qathi.com
rbcmail.ru
rewin.cz
skrzynka.pl
talentxl.com
tenbit.pl
webmachine.co.uk
widgetdesigns.com
yahoo-inc.com
yahoo.ca
yahoo.co.uk
yahoo.fr
yahoo.gr
yhaoo.com