Hi, >> Do you not like connection-oriented RBLs? That client IP address is in >> both cbl.abuseat.org & pbl.spamhaus.org lists as an infected client. > > We run an anti-spam service for about 100K users and sell appliances > that filter for many more. Paying for RBLs is not cost-effective at > that scale.
You aren't finding that it's just at the expense of requiring increased processing power on the servers themselves? For an individual small network with an appliance, it's probably not a big deal, but I would think it would take a couple of large systems to process 100k users without the benefit of an RBL like zen. Thanks, Alex
