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前一篇提到了垃圾邮件过滤方法，接下来几篇将会提供垃圾邮件的过滤规则。
# Sample regexp message header filter lookup "table". See regexp_table(5) # for a description of the syntax. # # Message headers are filtered one at a time. This filter understands # multi-line mail headers, including MIME headers in the message body. # # The general format of a table entry is PATTERN RESULT. # |