Software by errorcodes.net:

Don't just filter Spam... stop it at the source. SPAMReporter is a powerful email header analyzer and reporting tool. Unlike reporting tools in typical spam filtering software, SPAMReporter actively attempts to determine the exact originating IP address of any email header automatically. When the address is determined, SPAMReporter will then contact the offenders ISP and submit an email with all necessary evidence to their abuse team..