IADB is *not* a whtielist.
It's a "here is information about the senders' policies and
practices."
list.
If their policies include all of their mail being confirmed opt-in, it
tells you that. If their mail is pure opt-out it tells you that too.
But the problem is that if you simply report what they tell you to,
there
is no real value in it as anti-spam measure (Ritcher also says he runs
opt-in lists - year right, as if I can believe him!) unless you're also
willing to put your own company's reputation on the line that the info
is
correct and allow others to report its not (and then do investigations
and take those who lied out of your list, preferably informing public
of
who was taken off as well).
Sigh.
From the very first paragraph of the page at
http://www.isipp.com/iadb.php:
"The ISIPP Accreditation Database (IADB) is a DNS list of the domains
and/or IP addresses of senders who either a) meet ISIPP's criteria as
determined by background, reference, and other checks ("non-vouched
listings"), or b) are personally known to ISIPP to meet the criteria
and to be good Internet mailing citizens, and for whom we will thus
vouch ("vouched listings")."
Anne