efa v4 和exchange 安裝開源垃圾郵件網關在Centos7中安裝

虛擬機插入 Centos 7 Min .ISO 光盤

進入到安裝選 項 按tab鍵

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

按Enter 自動安裝，網絡安裝 大概需要下載500MB左右的文件 需要等60分鐘左右

安裝完成

安裝配置

修改網卡

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

你不會在eFa上使用智能主機，而是建立eFa作爲出站中繼。

EFA配置選項7）郵件設置 - >選項1）出站郵件中繼

EFA配置選項7“出站智能主機”（7,2）“智能主機：已禁用”，因爲您希望EFA直接發送郵件

EFA配置選項7“傳輸設置” “（7,4）as”domain.com“”<您的交換服務器的內部IP地址“

EFA配置選項8“垃圾郵件設置” “（8,1）非垃圾郵件設置

垃圾郵件設置>非垃圾郵件設置

• 禁用存儲非垃圾郵件：否（這允許培訓誤報以及最近的存檔/恢復）。

禁用非垃圾郵件簽名：是（此設置取決於您是否需要EFA水印，我禁用它，因爲我們（IT管理員）管理垃圾郵件而不是用戶。此外，我們的大多數（99％）用戶都是外部的將全民教育暴露在互聯網上。）

• EFA配置選項9“垃圾郵件設置” “（8,2）圾郵件設置
• 推薦：垃圾郵件設置>垃圾郵件設置。啓用垃圾郵件傳遞：是的。（這與後面提到的其他規則相結合，允許可疑垃圾郵件進入用戶的垃圾郵件文件夾。

EFA V4與Active Directory集成

請安裝 php-ldap （rpm -qa|grep php）

yum install lrzsz -y

vi /var/www/html/mailscanner/conf.php（編輯後重啓系統 需要開啓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', '[email protected]');

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服務器IP和域名)

192.168.32.83 mail.test.xyz

設置垃圾郵件不修改主題

vi /etc/MailScanner/MailScanner.conf

Spam Subject Text =

/etc/init.d/spamassassin restart

exchange 設置垃圾郵件過濾

添加規則

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."

步驟 2：使用命令行管理程序重新啓動 Microsoft Exchange 傳輸服務

運行命令：Restart-Service MSExchangeTransport

重啓服務

service sqlgrey restart

service spamassassin restart

service webmin restart

service clamd restart

service MailScanner restart

service postfix restart

MailScanner --lint

spamassassin -D --lint （重新加載規則）

安裝fail2ban  自動攔截郵件***

yum install fail2ban –y

# vi /etc/fail2ban/jail.conf

最後一行添加如下：

[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中編輯或新加文件，文件名一定要跟上一步jail.conf配置文件中的“filter=”對應

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 "<HOST>" can

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

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

# Values: TEXT

#

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

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

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

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

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

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

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

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

reject: RCPT from (.*)\[<HOST>\]: 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+\[<HOST>\]: 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+\[<HOST>\]: 450 4\.7\.1 : Helo command rejected: Host not found; from=<> to=<> proto=ESMTP helo= *$ ^%(__prefix_line)sNOQUEUE: reject: RCPT from \S+\[<HOST>\]: 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+\[<HOST>\]: 550 5\.1\.1 .*$ ^%(__prefix_line)sNOQUEUE: reject: RCPT from \S+\[<HOST>\]: 504 5\.5\.2 .*$ ^%(__prefix_line)sNOQUEUE: reject: RCPT from \S+\[<HOST>\]: 554 5\.7\.1 .*$ ^%(__prefix_line)simproper command pipelining after \S+ from [^[]*\[<HOST>\]:?$ ^%(__prefix_line)slost connection after \S+ from [^[]*\[<HOST>\]:?$ ^%(__prefix_line)swarning: [-._\w]+\[<HOST>\]: SASL ((?i)LOGIN|PLAIN|(?:CRAM|DIGEST)-MD5) authentication failed(: [ A-Za-z0-9+/:]*={0,2})?\s*$ ^%(__prefix_line)sstatistics: max connection rate \S+ for \(smtp:<HOST>\):?$ 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

啓動fail2ban

systemctl start fail2ban

查看攔截fail2ban

fail2ban-client status postfix

CentOS7版本後防火牆默認使用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

測試郵件內容過濾

發送測試郵件的文本內容如下：

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

測試反病毒郵件

發送測試郵件的文本內容如下：

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

關閉MailScanner 對郵件內容掃描簽名

vi /etc/MailScanner/MailScanner.conf

Dangerous Content Scanning = no

對發送的郵件進行簽名

vi /etc/Mailscanner/Mailscanner.conf

Sign Clean Messages = no

這個選項默認是打開的，表示MailScanner對郵件內容進行掃描，但是過於嚴格了，會把很多html郵件濾掉，所以我把它關了。

systemctl restart mailscanner.service

Virus Scanners = clamd

設置殺毒軟件，如果使用clamav，則Virus Scanners = clamav。

vi /etc/MailScanner/MailScanner.conf

在2242行

Required SpamAssassin Score = 4

（高評分垃圾郵件投遞）

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

systemctl restart mailscanner.service