An up-to-date collection of spam emitting IP addresses: The iX blacklist is made of over 500,000 automatically generated entries per day without distinguishing open proxies from relays, dialup gateways, and so on. After 12 hours, the IP address will be removed if there is no new spam sent. Follow the removal instructions on www.dnsbl.manitu.net if you need to expedite the delisting process.