SpamAssassin 是一种安装在邮件伺服主机上的邮件过滤器，用来辨识垃圾信。它是使用大量的预设规则检查垃圾信，这些规则会检查寄到网域内所有邮件的标头，内文，以及送信者。他采取的过滤方式是采用记分制，也就是说会根据我们所设定的标准来给予分数超过标准值的时候即判定为 SPAM,如果你使用了邮件服务器我们就一起来看看spamassassin配置方法。

　　spamassassin

　　安装

　　yum -y install spamassassin

　　修改Openwebmail的设定档

　　/var/www/cgi-bin/openwebmail/etc/openwebmail.conf

　　enable_spamcheck yes

　　enable_learnspam yes

　　learnspam_pipe /usr/bin/sa-learn --spam

　　learnham_pipe /usr/bin/sa-learn --ham

　　设定spamassassin，直接??即可使用

　　vi /etc/mail/spamassassin/local.cf

　　# How many hits before a message is considered spam.

　　required_hits 6.5

　　# Whether to change the subject of suspected spam

　　rewrite_subject 1

　　# Text to prepend to subject if rewrite_subject is used

　　subject_tag [SPAM]

　　# Encapsulate spam in an attachment

　　report_safe 1

　　# Use terse version of the spam report

　　use_terse_report 0

　　# Enable the Bayes system

　　use_bayes 1

　　# Enable Bayes auto-learning

　　auto_learn 1

　　# Enable or disable network checks

　　skip_rbl_checks 0

　　use_razor2 1

　　use_dcc 1

　　use_pyzor 1

　　# Mail using languages used in these country codes will not be marked

　　# as being possibly spam in a foreign language.

　　# - chinese english

　　ok_languages zh en

　　# Mail using locales used in these country codes will not be marked

　　# as being possibly spam in a foreign language.

　　ok_locales zh en

　　# white list

　　whitelist_from www.111cn.net

　　# for CJK

　　score HEADER_8BITS 0

　　score HTML_COMMENT_8BITS 0

　　score SUBJ_FULL_OF_8BITS 0

　　score UPPERCASE_25_50 0

　　score UPPERCASE_50_75 0

　　score UPPERCASE_75_100 0

　　score BASE64_ENC_TEXT 0

　　score DATE_IN_PAST_03_06 0

　　score FROM_NAME_NO_SPACES 0

　　score X_MSMAIL_PRIORITY_HIGH 0

　　score X_PRIORITY_HIGH 0

　　# customized scores

　　score SUBJ_ILLEGAL_CHARS 1.0 1.0 0.8 0.8

　　score HEAD_ILLEGAL_CHARS 1.0 1.0 0.8 0.8

　　score FROM_ILLEGAL_CHARS 0.7 0.2 0.3 0.7

　　# customized scores

　　score TO_TXT 100

　　score RATWARE_HASH_2 100

　　score RATWARE_HASH_2_V2 100

　　score RATWARE_JIXING 100

　　# customized rules

　　header FOXMAIL X-Mailer =~ /FoxMail /

　　describe FOXMAIL Foxmail

　　score FOXMAIL 3.5

　　header QSUBJ Subject =~ /吗|哦|?|!/

　　describe QSUBJ Header contain question? in chinese

　　score QSUBJ 1

　　header CDROM_ZH Subject =~ /光碟/

　　describe CDROM_ZH Header contain CD in chinese

　　score CDROM_ZH 1

　　body UNSUBSCRIBE_ZH /取消.*订阅/

　　describe UNSUBSCRIBE_ZH Body contain unsubscribe msg in chinese

　　score UNSUBSCRIBE_ZH 1

　　body SPAM1_ZH /发信软体/

　　describe SPAM1_ZH Body contain spammer msg in chinese

　　score SPAM1_ZH 1

　　body SPAM2_ZH /发信系统/

　　describe SPAM2_ZH Body contain spammer msg in chinese

　　score SPAM2_ZH 1

　　body SPAM3_ZH /打扰.*致.*歉/

　　describe SPAM3_ZH Body contain spammer msg in chinese

　　score SPAM3_ZH 1

　　body SPAM4_ZH /行销光碟|行销名单/

　　describe SPAM4_ZH Body contain spammer msg in chinese

　　score SPAM4_ZH 1

　　body SPAM5_ZH /风险.*利润/

　　describe SPAM5_ZH Body contain spammer msg in chinese

　　score SPAM5_ZH 1

　　body WINDOWOPEN /window.open(/i

　　describe WINDOWOPEN JavaScript: Windows.Open

　　score WINDOWOPEN 3.5