I have come across an IP list Here
that list China and Korea IP ranges. I run an e-mail server and would like to block all trafic from China/Korea as most SPAM comes from the ARIN/RIPE/APNIC IP ranges. There are 3 formats : Contiguous, CIDR Format, and dnsbl zone file format. I use mailenable and Zonealarm Pro on my server thru a Linksys firewall. What is the best file to use and the best way to implement this?
**** Please note before flaming: I am in no way prejudice against Asians or Chinese. We do not have any business with those countries and never get or expect to get legitimate e-mails from them. There is no reason for me not to block these IP ranges. The only reason for me to keep them unblocked is because I just love getting pen1$ en1arg3ment and v1agra offers. ****