Reference this feature ...
New registrations are checked against the known spammer database at StopForumSpam.com. If the email, IP, or username exists in their database, the user (or bot as the case may be) is denied registration on your forums.
Using the StopForumSpam mod, we have found that blocking based upon IP address is a killer and a LOT of legitimate registrants were being blocked, so we turned OFF this option allowing the email address and user name to continue being checked.
Does your mod allow the same configuration options?
I can't really tell by your sample pic as the text is so small I can't read the AdminCP options ...
On a side note, this looks really interesting and could consolidate several methods we use now ...
Regards,
Badger