垃圾郵件的過濾方法
2015-10-27這(zhe)種過(guo)濾器通常已(yi)經(jing)安裝在電(dian)子郵(you)(you)(you)(you)(you)(you)件(jian)(jian)(jian)(jian)客戶端軟件(jian)(jian)(jian)(jian)或(huo)郵(you)(you)(you)(you)(you)(you)件(jian)(jian)(jian)(jian)服務器上。其原理(li)是過(guo)濾軟件(jian)(jian)(jian)(jian)檢查(cha)郵(you)(you)(you)(you)(you)(you)件(jian)(jian)(jian)(jian)的發信人(ren)、標題(ti)、正文內容,以及郵(you)(you)(you)(you)(you)(you)件(jian)(jian)(jian)(jian)中出(chu)現的鏈接和域(yu)名(ming),甚至(zhi)電(dian)話(hua)號(hao)碼。當發現帶有明(ming)顯廣告性質,或(huo)經(jing)常出(chu)現已(yi)知垃(la)(la)圾(ji)郵(you)(you)(you)(you)(you)(you)件(jian)(jian)(jian)(jian)的典(dian)型特征,則給這(zhe)封郵(you)(you)(you)(you)(you)(you)件(jian)(jian)(jian)(jian)打(da)一定的垃(la)(la)圾(ji)郵(you)(you)(you)(you)(you)(you)件(jian)(jian)(jian)(jian)特征分(fen)數。當分(fen)數達(da)到(dao)一定數值(zhi)時(shi),郵(you)(you)(you)(you)(you)(you)件(jian)(jian)(jian)(jian)將被標志(zhi)為垃(la)(la)圾(ji)郵(you)(you)(you)(you)(you)(you)件(jian)(jian)(jian)(jian),直接過(guo)濾到(dao)垃(la)(la)圾(ji)郵(you)(you)(you)(you)(you)(you)件(jian)(jian)(jian)(jian)文件(jian)(jian)(jian)(jian)夾(jia)。