虚拟机插入 Centos 7 Min .ISO 光盘

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进入到安装选 项 按tab键

添加 inst.ks=http://dl.efa-project.org/build/4/kstesting.cfg

按Enter 自动安装，网络安装 大概需要下载500MB左右的文件 需要等60分钟左右

安装完成

安装配置

修改网卡

vi /etc/sysconfig/network-scripts/ifcfg-ens160

你不会在eFa上使用智能主机，而是建立eFa作为出站中继。

EFA配置选项7）邮件设置 - >选项1）出站邮件中继

EFA配置选项7“出站智能主机”（7,2）“智能主机：已禁用”，因为您希望EFA直接发送邮件

EFA配置选项7“传输设置” “（7,4）as”domain.com“”<您的交换服务器的内部IP地址“

EFA配置选项8“垃圾邮件设置” “（8,1）非垃圾邮件设置

垃圾邮件设置>非垃圾邮件设置

• 禁用存储非垃圾邮件：否（这允许培训误报以及最近的存档/恢复）。

禁用非垃圾邮件签名：是（此设置取决于您是否需要EFA水印，我禁用它，因为我们（IT管理员）管理垃圾邮件而不是用户。此外，我们的大多数（99％）用户都是外部的将全民教育暴露在互联网上。）

• EFA配置选项9“垃圾邮件设置” “（8,2）圾邮件设置
• 推荐：垃圾邮件设置>垃圾邮件设置。启用垃圾邮件传递：是的。（这与后面提到的其他规则相结合，允许可疑垃圾邮件进入用户的垃圾邮件文件夹。

EFA V4与Active Directory集成

请安装 php-ldap （rpm -qa|grep php）

yum install lrzsz -y

vi /var/www/html/mailscanner/conf.php（编辑后重启系统 需要开启apache https）

// LDAP settings for authentication

define('USE_LDAP', true);

define('LDAP_SSL', false);

define('LDAP_HOST', '192.168.32.83');

define('LDAP_PORT', '389');

define('LDAP_DN', 'OU=email,DC=test,DC=xyz');

define('LDAP_USER', 'test@test.xyz');

define('LDAP_PASS', '123456');

define('LDAP_SITE', 'Default-First-Site-Name');

define('LDAP_FILTER', 'proxyAddresses=smtp:%s', 'mail=%s');

define('LDAP_PROTOCOL_VERSION', 3);

define('LDAP_EMAIL_FIELD', 'mail');

define('LDAP_USERNAME_FIELD', 'cn');

define('LDAP_MS_AD_COMPATIBILITY', true);

vi /etc/hosts (添加exchange服务器IP和域名)

192.168.32.83 mail.test.xyz

设置垃圾邮件不修改主题

vi /etc/MailScanner/MailScanner.conf

Spam Subject Text =

/etc/init.d/spamassassin restart

exchange 设置垃圾邮件过滤

添加规则

New-TransportRule -Name "EFA to Junk Folder" -HeaderMatchesMessageHeader "X-Spam-Status" -HeaderMatchesPatterns "Yes" -SetSCL 9 -Comments "This rule moves spam messages from the EFA filter to the users junk mail folder."

步骤 2：使用命令行管理程序重新启动 Microsoft Exchange 传输服务

运行命令：Restart-Service MSExchangeTransport

重启服务

service sqlgrey restart

service spamassassin restart

service webmin restart

service clamd restart

service MailScanner restart

service postfix restart

MailScanner --lint

spamassassin -D --lint （重新加载规则）

安装fail2ban  自动拦截邮件***

yum install fail2ban –y

# vi /etc/fail2ban/jail.conf

最后一行添加如下：

[postfix]

enabled = true

filter = postfix

action = iptables-allports[name=postfix, port=25, protocol=tcp]

ignoreip = 127.0.0.1

logpath = /var/log/maillog

bantime = 6048000

findtime = 120

maxretry = 3

[postfix-ddos]

enabled = true

filter = postfix-ddos

action = iptables-allports[name=MAIL, protocol=all]

logpath = /var/log/maillog

maxretry = 2

findtime = 86400

bantime = 604800

/etc/fail2ban/filter.d中编辑或新加文件，文件名一定要跟上一步jail.conf配置文件中的“filter=”对应

POSTFIX

vi /etc/fail2ban/filter.d/postfix.conf

# Fail2Ban configuration file

#

# Author: Cyril Jaquier

#

# $Revision: 510 $

#

[Definition]

# Option: failregex

# Notes.: regex to match the password failures messages in the logfile. The

# host must be matched by a group named "host". The tag "" can

# be used for standard IP/hostname matching and is only an alias for

# (?:::f{4,6}:)?(?P\S+)

# Values: TEXT

#

failregex = warning: (.*)\[\]: SASL LOGIN authentication failed:

reject: RCPT from (.*)\[\]: 550 5.1.1

reject: RCPT from (.*)\[\]: 450 4.7.1

reject: RCPT from (.*)\[\]: 554 5.7.1

reject: RCPT from (.*)\[\]: 554 5.5.2

reject: RCPT from (.*)\[\]: 504 5.5.2

reject: RCPT from (.*)\[\]: 450

reject: RCPT from (.*)\[\]: 554

reject: RCPT from (.*)\[\]: 554 5.7.1

# Option: ignoreregex

# Notes.: regex to ignore. If this regex matches, the line is ignored.

# Values: TEXT

#

ignoreregex =

--------------------------------------------------------------------------------------------------------------

vi /etc/fail2ban/filter.d/postfix-ddos.conf

# Fail2Ban filter for Postfix DDOS attacks # [INCLUDES] before = common.conf [Definition] _daemon = postfix/(submission/)?smtp(d|s) failregex = ^%(__prefix_line)sNOQUEUE: reject: RCPT from \S+\[\]: 450 4\.7\.1 Client host rejected: cannot find your hostname, (\[\S*\]); from=<\S*> to=<\S+> proto=ESMTP helo=<\S*>$ ^%(__prefix_line)sNOQUEUE: reject: RCPT from \S+\[\]: 450 4\.7\.1 : Helo command rejected: Host not found; from=<> to=<> proto=ESMTP helo= *$ ^%(__prefix_line)sNOQUEUE: reject: RCPT from \S+\[\]: 454 4\.7\.1 Service unavailable; Client host \[\S+\] blocked using .* from=<\S*> to=<\S+> proto=ESMTP helo=<\S*>$ ^%(__prefix_line)sNOQUEUE: reject: VRFY from \S+\[\]: 550 5\.1\.1 .*$ ^%(__prefix_line)sNOQUEUE: reject: RCPT from \S+\[\]: 504 5\.5\.2 .*$ ^%(__prefix_line)sNOQUEUE: reject: RCPT from \S+\[\]: 554 5\.7\.1 .*$ ^%(__prefix_line)simproper command pipelining after \S+ from [^[]*\[\]:?$ ^%(__prefix_line)slost connection after \S+ from [^[]*\[\]:?$ ^%(__prefix_line)swarning: [-._\w]+\[\]: SASL ((?i)LOGIN|PLAIN|(?:CRAM|DIGEST)-MD5) authentication failed(: [ A-Za-z0-9+/:]*={0,2})?\s*$ ^%(__prefix_line)sstatistics: max connection rate \S+ for \(smtp:\):?$ ignoreregex = lost connection after .* from unknown\[unknown\]$ authentication failed: Connection lost to authentication server$ statistics: max connection rate .* for \(smtp:unknown\).*$ [Init] journalmatch = _SYSTEMD_UNIT=postfix.service # Author: kn007

启动fail2ban

systemctl start fail2ban

查看拦截fail2ban

fail2ban-client status postfix

CentOS7版本后防火墙默认使用firewalld

systemctl start firewalld

yum install -y iptables-services

service iptables start

vi /etc/sysconfig/iptables

-A INPUT -p tcp -m state --state NEW -m tcp --dport 80 -j ACCEPT

-A INPUT -p tcp -m state --state NEW -m tcp --dport 587 -j ACCEPT

-A INPUT -p tcp -m state --state NEW -m tcp --dport 22 -j ACCEPT

-A INPUT -p tcp -m state --state NEW -m tcp --dport 25 -j ACCEPT

-A INPUT -p tcp -m state --state NEW -m tcp --dport 10000 -j ACCEPT

-A INPUT -p tcp -m state --state NEW -m tcp --dport 443 -j ACCEPT

测试邮件内容过滤

发送测试邮件的文本内容如下：

XJS*C4JDBQADN1.NSBN3*2IDNEN*GTUBE-STANDARD-ANTI-UBE-TEST-EMAIL*C.34X

测试反病毒邮件

发送测试邮件的文本内容如下：

X5O!P%@AP[4\PZX54(P^)7CC)7}$EICAR-STANDARD-ANTIVIRUS-TEST-FILE!$H+H*

关闭MailScanner 对邮件内容扫描签名

vi /etc/MailScanner/MailScanner.conf

Dangerous Content Scanning = no

对发送的邮件进行签名

vi /etc/Mailscanner/Mailscanner.conf

Sign Clean Messages = no

这个选项默认是打开的，表示MailScanner对邮件内容进行扫描，但是过于严格了，会把很多html邮件滤掉，所以我把它关了。

systemctl restart mailscanner.service

Virus Scanners = clamd

设置杀毒软件，如果使用clamav，则Virus Scanners = clamav。

vi /etc/MailScanner/MailScanner.conf

在2242行

Required SpamAssassin Score = 4

（高评分垃圾邮件投递）

High Scoring Spam Actions = deliver header "X-Spam-Status:Yes"

systemctl restart mailscanner.service

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