Re: Spam Filtering and Messy Details.

[Norbert Bollow]

Ron Guilmette <[EMAIL PROTECTED]> wrote among other things:

> On the receiving end, sites which receive mail to some large number of their
> users (say 20 or more) at about the same time from a given IP address would
> check the message after the first 20 for the presence of a valid X-Opt-In:

Here's a weak point of your proposal IMHO... Someone would write a tool for
spammers to allow them to send out their spam with bogus orginating IP 
addresses (using IP spoofing).

-- 
Norbert Bollow, Zuerich, Switzerland     Backup E-mail address: [EMAIL PROTECTED]
Churchplanters E-mail conference, see http://genesis.acu.edu/cplant/