Are you asking this in relation to Mailwasher and its Origins of Spam feature? If so there is no requirement as that is an integral part of the program and any settings related to MailWasher (and you shouldn’t need any) would take care of it.

You will see I am using MailWasher Pro from my signature and the attached image.

Edit: You will also see that I am using an additional source sbl-xbl.spamhaus.org this detects the majority of my spam and I have stopped using ordb.org as I didn’t see it catching anything.