daniel quinlan quinlanpathnamecom please feel free forward message possiblyinterested parties caveats decending order concern 1 messages could end falsely incorrectly reported razor dcc pyzor etc certain rbls dont think results distributed tests trusted way shape form running public corpus 2 messages could also submitted projects like spamassassin rely filtering results submission ga tuning development 3 spammers could adopt elements good messages throw filters course theres always progression technology spammers nonspammers second problem could alleviated somewhat adding nilsimsa signature similar masscheck file results format used spamassassin giving message files unique names md5 sha1 file third problem doesnt really worry problems perhaps others identified unique spam filtering compression corpuses performancerelated corpuses set problems course words dont think theres replacement multiple independent corpuses finding better ways distribute testing collate results seems like viable longterm solution im glad working exactly spamassassin youre going seriously work filter development building corpus 1000050000 messages half spamhalf nonspam really much work dont get enough spam creating multitechnique spamtraps web usenet replying spam pretty easy doesnt get thousands nonspam every week dan 09 oct 2002 214702 0700 sadev fullypublic corpus mail available