I receive a large number of spams from network IPs belonging to SharkTech, 70.39.69.99 or so and so on.
They advertise romantic encounters with people born prior to 50 years ago, small increment auxions, ability to borrow money using house as collateral, and other scams. Examples are here: http://igor.chudov.com/tmp/spam011.txt I am being hit pretty badly and feel annoyed. How can I write a rule to blacklist a whole IP subnet. Any ideas? If anyone knows what I am doing wrong so that these spams do not score, please let me know. I am using Ubuntu Lucid, which is pretty recent.
