RHEL5下邮件系统的安装过程(3)

　　# 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 1
　　use_razor2 0
　　use_dcc 0
　　use_pyzor 0
　　# Mail using languages used in these country codes will not be marked
　　# as being possibly spam in a foreign language.
　　ok_languages all
　　# Mail using locales used in these country codes will not be marked
　　# as being possibly spam in a foreign language.
　　ok_locales all
　　4、启动spamassassin
　　# service spamassassin start
　　MailScanner设定
　　1修改MailScanner.conf
　　# vi /etc/MailScanner/MailScanner.conf
　　Run As User = postfix
　　Run As Group = postfix
　　Incoming Queue Dir = /var/spool/postfix/hold
　　Outgoing Queue Dir = /var/spool/postfix/incoming
　　MTA = postfix
　　Virus Scanners = f-prot
　　Always Include SpamAssassin Report = yes
　　Use SpamAssassin = yes
　　Required SpamAssassin Score = 4
　　SpamAssassin User State Dir = /var/spool/MailScanner/spamassassin

　　SpamAssassin Install Prefix = /usr/bin
　　SpamAssassin Local Rules Dir = /etc/MailScanner
　　2、修改 postfix支持mailscanner
　　# vi /etc/postfix/main.cf
　　变更以下的值
　　header_checks = regexp:/etc/postfix/header_checks
　　# vi /etc/postfix/header_checks
　　/^Received:/ HOLD
　　注意, 在 / 之前不可以有空白!
　　3、变更目录权限
　　# chown postfix.postfix /var/spool/MailScanner/incoming
　　# chown postfix.postfix /var/spool/MailScanner/quarantine
　　停止postfix执行、启动MailScanner
　　# service postfix stop
　　# chkconfig postfix off
　　# service MailScanner start
　　设定MailScanner，当MTA = postfix时，会自己启动postfix，如有设定启动postfix的请先将它停掉
　　4、定期更新病毒定义文件
　　# crontab -e
　　0 4 * * * /usr/local/f-prot/tools/check-updates.pl
　　并将原本在/etc/cron.hourly/update_virus_scanners 删除掉
　　测试SpamAssassin
　　发一封邮件带如下内容，接收后，标题应该带有标记：
　　XJS*C4JDBQADN1.NSBN3*2IDNEN*GTUBE-STANDARD-ANTI-UBE-TEST-EMAIL*C.34X
　　这样，我们就已经搭建起一个基本的邮件系统。