1. 安装软件和依赖包
apt-get install amavisd-new spamassassin clamav-daemon mysql-client mysql-server
apt-get install libnet-dns-perl pyzor razor
apt-get install arj bzip2 cabextract cpio file gzip lha nomarch pax rar unrar unzip zip

2. 修改用户权限
usermod -a -G clamav amavis
usermod -a -G amavis clamav

3. 修改spamassassin配置文件/etc/default/spamassassin
ENABLED=0 ====> ENABLED=1
CRON=0    ====> CRON=1

4.启动spamassassin
/etc/init.d/spamassassin start

5. 修改amavis配置文件/etc/amavis/conf.d/15-content_filter_mode
    1) 去掉里面的注释（目的：check病毒和垃圾邮件）
    2) 重启amavis
/etc/init.d/amavis restart

6. 修改postfix配置文件/etc/postfix/main.cf,添加如下内容
    注释掉mydestination
   添加：
   relay_domains = jobcn.com
   transport_maps = hash:/etc/postfix/transport
   relay_recipient_maps = hash:/etc/postfix/relay_recipients
   content_filter = smtp-amavis:[127.0.0.1]:10024

7. 编辑文件/etc/postfix/master.cf,在文件最后添加如下内容
smtp-amavis     unix    -       -       -       -       2       smtp
        -o smtp_data_done_timeout=1200
        -o smtp_send_xforward_command=yes
        -o disable_dns_lookups=yes
        -o max_use=20

127.0.0.1:10025 inet    n       -       -       -       -       smtpd
        -o content_filter=
        -o local_recipient_maps=
        -o relay_recipient_maps=
        -o smtpd_restriction_classes=
        -o smtpd_delay_reject=no
        -o smtpd_client_restrictions=permit_mynetworks,reject
        -o smtpd_helo_restrictions=
        -o smtpd_sender_restrictions=
        -o smtpd_recipient_restrictions=permit_mynetworks,reject
        -o smtpd_data_restrictions=reject_unauth_pipelining
        -o smtpd_end_of_data_restrictions=
        -o mynetworks=127.0.0.0/8
        -o smtpd_error_sleep_time=0
        -o smtpd_soft_error_limit=1001
        -o smtpd_hard_error_limit=1000
        -o smtpd_client_connection_count_limit=0
        -o smtpd_client_connection_rate_limit=0
        -o receive_override_options=no_header_body_checks,no_unknown_recipient_checks

8. 在文件/etc/postfix/master.cf中的pickup行添加如下内容
      -o content_filter=
      -o receive_override_options=no_header_body_checks

9. 重启postfix
/etc/init.d/postfix reload

10. 修改/etc/amavis/conf.d/20-debian_defaults
$findal_spam_destiny = D_BOUNCE  ===> $findal_spam_destiny = D_DISCARD

$QUARANTINEDIR = "/data/virusmails";

11. 修改/etc/amavis/conf.d/05-node_id
$myhostname = "mail.example.com";

12. 修改/etc/amavis/conf.d/50-user,添加如下内容：
$spam_quarantine_to = "spam-quarantine";
$virus_quarantine_to = "spam-quarantine";

@whitelist_sender_maps = read_hash("/etc/amavis/whitelist");
@blacklist_sender_maps = read_hash("/etc/amavis/blacklist");

13. 在目录/etc/amavis下创建文件blacklist和whitelist
touch /etc/amavis/whitelist
touch /etc/amavis/blacklist

14. 垃圾及病毒邮件的保存目录
/data/virusmails