主题: 关于垃圾邮件评分结果的问题
X-Spam-Status: Yes, score=12.531 tagged_above=2 required=6.2 tests=[BAYES_95=3, DCC_CHECK=4, FORGED_OUTLOOK_HTML=0.001, HTML_MESSAGE=0.001, MIME_BASE64_TEXT=1.753, MIME_HTML_ONLY=1.457, RDNS_NONE=0.1, TVD_SPACE_RATIO=2.219] autolearn=no
X-Spam-Status: Yes, score=19.854 tagged_above=2 required=6.2 tests=[BAYES_99=3.5, DCC_CHECK=4, FORGED_OUTLOOK_HTML=0.001, HTML_MESSAGE=0.001, HTML_OBFUSCATE_05_10=0.001, MIME_BASE64_BLANKS=0.041, MIME_BASE64_TEXT=1.753, MIME_HTML_ONLY=1.457, RDNS_NONE=0.1, SUSPICIOUS_RECIPS=2.912, TVD_SPACE_RATIO=2.219, URIBL_AB_SURBL=0.3812, URIBL_BLACK=1.955, URIBL_RHS_DOB=1.083, URIBL_SC_SURBL=0.4498] autolearn=spam
X-Spam-Status: Yes, score=19.716 tagged_above=2 required=6.2 tests=[BAYES_99=3.5, DATE_IN_FUTURE_96_XX=1.439, DCC_CHECK=4, HTML_FONT_FACE_BAD=0.884, HTML_MESSAGE=0.001, HTML_OBFUSCATE_10_20=2.601, MIME_BASE64_BLANKS=0.041, MIME_HTML_ONLY=1.457, RDNS_NONE=0.1, SUBJ_ALL_CAPS=2.077, TVD_SPACE_RATIO=2.219, UNPARSEABLE_RELAY=0.001, WEIRD_QUOTING=1.396] autolearn=unavailable
X-Spam-Status: Yes, score=8.318 tagged_above=2 required=6.2 tests=[BAYES_95=3, DCC_CHECK=4, HTML_MESSAGE=0.001, HTML_TITLE_SUBJ_DIFF=1.217, RDNS_NONE=0.1] autolearn=no
以上信息是我服务器过滤后的评分结果，其中最后有：autolearn=no/spam/unavailable ,这个配置是在什么地方进行配置，有什么作用？
谢谢！