Challenge-Response Script for CPanel

[kameir]

I am looking for a challenge-response solution for CPanel that works like 'spamarrest'.
Is something like that out there?

[cPanelDavidG]

I am looking for a challenge-response solution for CPanel that works like 'spamarrest'.
Is something like that out there?

cPanel is bundled with BoxTrapper which is a challenge response system that supports whitelisting and blacklisting. Those not on either your white or black lists are greeted by a message and they merely need to respond to the message for their email to be delivered to you.