I invoke RBL support via Exim, and reject on the neighborhood of 5000 mssages a day. I also deny TLD's from around the world, as I have no desire to get mail from Kuwait, Qatar, Pakistan, Brazil, Chile, etc.
13R2P 1st F.A.D., XVIII ABN CORPS ARTY (1984-1988)
11C (4.2" Mortar) CSC 2/124INF, FLARNG (1988-1989)
BA 1993, MA 1995, West Virginia University