If you use the uceprotect RBL, note that they are involved in a shakedown to solicit money to be removed from their list. Much like spamrl, I'd suggest not using them since they have an obvious false positive problem.
http://www.uceprotect.net/en/rblcheck.php?ipr=107.170.248.198 Their own system shows my domain is not the same as the spammers domain. Plenty of good RBLs out there. No uses feeding the criminals (uceprotect) or the incompetent (spamrl).
