Dave Rand and Paul Vixie, well known Internet software engineers, started keeping a list of IP addresses which had sent out spam or engaged in other objectionable behavior. The list became known as the Real-time Blackhole List (RBL).
Dave Rand and Paul Vixie, prominent Internet software engineers, compiled a list of IP addresses that had sent out spam or engaged in other inappropriate activities. This compilation became known as the Real-time Blackhole List (RBL).