By the way, how ancient a version of SA are you using? ORBS hasn't been used by SA since 2.55. (although alternate-language describes existed through 2.64, no actual rule exists in the 2.6x or 3.x families)
Side note on the subject.. ORBS is in fact dead.
http://www.dorkslayers.com/
"Due to circumstances beyond our control, the Dorkslayers DNSBLs are no longer available. "
