http://www.mail-archive.com/users@spamassassin.apache.org/msg69546.html Whitelists have almost zero impact on spamassassin's determination of ham vs spam. Believe me. This is not harmful.
If you have any ham corpus it would be extremely useful to spamassassin. We have a severe lack of variety of data sources, so even a flawed data source would be incredibly useful. In this case the flaw is a not harmful like the skew that a blacklist would cause. Why recuse yourself from providing statistical data on the thousand other tests? http://ruleqa.spamassassin.org/ Look at how few contributors there are. The WORLD of spamassassin users is relying on the ham of a tiny group. spamassassin defaults are working great on MY spam, but I worry about others, especially non-US, non-English, or non-geek mail. We need greater variety and a larger sample size. Warren