Does SpamSieve track or work with IP addresses in headers? My address is with a competent Spamemer - My ISP uses Spaminator and that is useless against this one Spammer. I have determined they use a specific Host and groups of IPs at that host. This has allowed me to successfully catch the stuff by blocking IPs. For example I might block all email with any header containing 69.175.70. – because I get SPAM form 126.96.36.199, 188.8.131.52, 184.108.40.206, etc.