Re: DEPLOY: Sender-ID provides little or no defence against adaptive thr

> I  am also assuming that the 'bad guys' have read and understood 
> Sender-ID and
> so will have made whatever simple adaptations are necessary to 
> continue to
> unleash their mischief.
cf. CipherTrust's study released this week in which >50% of the sources 
for all email surveyed which published SPF records were spammers.
http://www.infoworld.com/article/04/08/31/HNspammerstudy_1.html

Anne