In theory you could use this method to catch some dubious submissions. It's not exactly a whitelist, a spammer is free to buy an IADB entry ($ 500 + a monthly fee) as long as he follows the IADB definition of "legit". I'm certain that it's neither your nor my definition... <gd&r>
Heh...the thing is, it's not a whitelist at all, and *you* (the receiver querying) gets to define what "legit" means. That's the beauty of the system.
Note that we even offer codes for "scrapes addressess". Oddly, no sender has signed up to be listed in that category. <grin>
Anne
Anne P. Mitchell, Esq. President/CEO Institute for Spam and Internet Public Policy Professor of Law, Lincoln Law School of SJ Committee Member, Asilomar Microcomputer Workshop