Postfix - Extmail 邮箱系统

Posted 2020-11-19 sharesdk

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Postfix dovecot Extmail 邮箱系统
早前的内部邮箱系统重新整理下，现在Extmail官方有集成镜像的EMOS_1.6_x86_64免费版；

系统环境：
linux 6.7 x64 4G

hosts:
172.16.2.19
mail.18mail.com

一、准备环境

简便的可以 yum 进行安装；安装 yum 源；
rpm -ivh http://repo.mysql.com/mysql-community-release-el6-5.noarch.rpm
rpm -Uvh https://mirror.webtatic.com/yum/el6/latest.rpm

1、环境的基础依赖包：
yum install gcc gcc-c++ gdbm libtool-ltdl
yum install cyrus-sasl-md5 perl-GD perl-DBD-MySQL perl-GD perl-CPAN perl-CGI perl-CGI-Session cyrus-sasl-lib cyrus-sasl-plain cyrus-sasl cyrus-sasl-devel libtool-ltdl-devel telnet mail libicu-devel

2、lamp 环境：
yum -y install httpd mysql-server mysql mysql-devel php56w php56w-fpm php56w-mysql php56w-common php56w-gd php56w-mbstring php56w-mcrypt php56w-devel php56w-xml php56w-imap php56w-pear php56w-snmp

二、安装 postfix dovecot

yum install postfix -y

创建邮箱属于账户组：
groupadd -g 5000 18mail
useradd -g 18mail -u 5000 -s /sbin/nologin 18mail

　　1、配置 postfix ：
　　postfix 的需要更改的文件是 main.cf 和 master.cf 后面第六条会配置；

三、安装 dovecot

# yum install dovecot dovecot-devel dovecot-mysql pam-devel -y

四、安装 courier-authlib

　　1、courier-authlib 是需要 courier-unicode 依赖；

# wget https://sourceforge.net/projects/courier/files/courier-unicode/1.2/courier-unicode-1.2.tar.bz2 
tar -jxvf 解压缩进行编译安装

# cd courier-unicode
# ./configure
# make && make install

　　2、先编译安装 courier-authlib：

# wget https://sourceforge.net/projects/courier/files/authlib/0.66.2/courier-authlib-0.66.2.tar.bz2
# tar -jxvf courier-authlib-0.66.2.tar.bz2

解压之后缩进行编译安装 
# cd courier-authlib
# ./configure --prefix=/usr/local/courier-authlib --sysconfdir=/etc --without-authpam --without-authshadow --without-authvchkpw --without-authpgsql --with-authmysql --with-mysql-libs=/usr/lib64/mysql --with-mysql-includes=/usr/include/mysql --with-redhat --with-authmysqlrc=/etc/authmysqlrc --with-authdaemonrc=/etc/authdaemonrc --with-mailuser=18mail
# make && make install

　　3、配置 courier-authlib：

# chmod 755 /usr/local/courier-authlib/var/spool/authdaemon
# cd /usr/local/courier-authlib/
拷贝 auth 验证文件：

# cp /etc/authdaemonrc.dist /etc/authdaemonrc
# cp /etc/authmysqlrc.dist /etc/authmysqlrc

　　4、配置验证方式：这里只使用了 authmysql

# cat /etc/authdaemonrc |grep -v ^$ |grep -v ^#

authmodulelist="authmysql"
authmodulelistorig="authmysql"
daemons=5
authdaemonvar=/usr/local/courier-authlib/var/spool/authdaemon
DEBUG_LOGIN=0
DEFAULTOPTIONS=""
LOGGEROPTS=""

技术分享图片

　　5、配置验证存储信息（邮箱的目录数据存放库的名称密码以及自己的域名）

# cat /etc/authmysqlrc |grep -v ^$ |grep -v ^#

MYSQL_SERVER localhost
MYSQL_USERNAME extmail
MYSQL_PASSWORD extmail
MYSQL_SOCKET /var/lib/mysql/mysql.sock
MYSQL_PORT 3306
MYSQL_OPT 0
MYSQL_DATABASE extmail
MYSQL_USER_TABLE mailbox
MYSQL_CRYPT_PWFIELD password
MYSQL_UID_FIELD uidnumber
MYSQL_GID_FIELD gidnumber
MYSQL_LOGIN_FIELD username
MYSQL_HOME_FIELD homedir
MYSQL_NAME_FIELD name
MYSQL_MAILDIR_FIELD maildir
MYSQL_QUOTA_FIELD quota
MYSQL_SELECT_CLAUSE SELECT username,password,"",uidnumber,gidnumber, CONCAT(‘/home/18mail/‘,homedir), CONCAT(‘/home/18mail/‘,maildir), quota, name, CONCAT("disableimap=",disableimap,",disablepop3=", disablepop3,",disablewebmail=",disablewebmail, ",disablesmtpd=",disablesmtpd,",disablesmtp=", disablesmtp,",disablenetdisk=",disablenetdisk, ",netdiskquota=",netdiskquota) FROM mailbox WHERE username = ‘$(local_part)@$(domain)‘
DEFAULT_DOMAIN    18mail.com

　　6、courier-authlib 配置服务启动：

# cp courier-authlib.sysvinit /etc/init.d/courier-authlib
# chmod +x /etc/init.d/courier-authlib
# chkconfig --add courier-authlib
# chkconfig courier-authlib on
# echo "/usr/local/courier-authlib/lib/courier-authlib" >> /etc/ld.so.conf.d/courier-authlib.conf
# ldconfig
# service courier-authlib start

　　7、smtp以及虚拟用户相关的设置：
　　手动创建 smtpd.conf

技术分享图片

# vi /usr/lib64/sasl2/smtpd.conf

pwcheck_method: authdaemond
log_level: 3
mech_list: PLAIN LOGIN
authdaemond_path:/usr/local/courier-authlib/var/spool/authdaemon/socket

五、安装 extmail

# wget http://7xivyw.com1.z0.glb.clouddn.com/extmail-1.2.tar.gz
# wget http://7xivyw.com1.z0.glb.clouddn.com/extman-1.1.tar.gz

　　1、创建extmail 临时文件目录与session目录；并设置邮箱账户的用户组的权限；

# mkdir -p /tmp/extmail/upload
# chown -R 18mail:18mail /tmp/extmail/

同样的为 extman创建临时目录：
# mkdir /tmp/extman
# chown -R 18mail:18mail /tmp/extman/

　　2、在 http web创建extsuite 目录（默认/var/www/ ）

# mkdir -p /var/www/extsuite 

解压缩 extmail extman 至 /var/www/extsuite 目录
更改 extmail 和 extman 下的 cgi目录的属主属组：
# chown -R 18mail:18mail /var/www/extsuite/

　　3、配置 extmail 相关配置；

# cd /var/www/extsuite/extmail
# cp -rp webmail.cf.default webmail.cf

　　更改 webmail.cf 配置

# cat /var/www/extsuite/extmail/webmail.cf |grep -v ^$ |grep -v ^#

SYS_CONFIG = /var/www/extsuite/extmail/
SYS_LANGDIR = /var/www/extsuite/extmail/lang
SYS_TEMPLDIR = /var/www/extsuite/extmail/html
SYS_HTTP_CACHE = 0
SYS_SMTP_HOST = localhost
SYS_SMTP_PORT = 25
SYS_SMTP_TIMEOUT = 5
SYS_SPAM_REPORT_ON = 0
SYS_SPAM_REPORT_TYPE = dspam
SYS_SHOW_WARN = 0
SYS_IP_SECURITY_ON = 1
SYS_PERMIT_NOQUOTA = 1
SYS_SESS_DIR = /tmp/extmail
SYS_UPLOAD_TMPDIR = /tmp/extmail/upload
SYS_LOG_ON = 1
SYS_LOG_TYPE = syslog
SYS_LOG_FILE = /var/log/extmail.log
SYS_SESS_TIMEOUT = 0
SYS_SESS_COOKIE_ONLY = 1
SYS_USER_PSIZE = 10
SYS_USER_SCREEN = auto
SYS_USER_LANG = zh_CN
SYS_APP_TYPE = WebMail
SYS_USER_TEMPLATE = default
SYS_USER_CHARSET = utf-8
SYS_USER_TRYLOCAL = 1
SYS_USER_TIMEZONE = +0800
SYS_USER_CCSENT = 1
SYS_USER_SHOW_HTML = 1
SYS_USER_COMPOSE_HTML = 1
SYS_USER_CONV_LINK =1
SYS_USER_ADDR2ABOOK = 1
SYS_MESSAGE_SIZE_LIMIT = 5242880
SYS_MIN_PASS_LEN = 2
SYS_MFILTER_ON = 1
SYS_NETDISK_ON = 1
SYS_SHOW_SIGNUP = 1
SYS_DEBUG_ON = 1
SYS_AUTH_TYPE = mysql
SYS_MAILDIR_BASE = /home/18mail
SYS_AUTH_SCHEMA = virtual
SYS_CRYPT_TYPE = md5crypt
SYS_MYSQL_USER = extmail
SYS_MYSQL_PASS = extmail
SYS_MYSQL_DB = extmail
SYS_MYSQL_HOST = localhost
SYS_MYSQL_SOCKET = /var/lib/mysql/mysql.sock
SYS_MYSQL_TABLE = mailbox
SYS_MYSQL_ATTR_USERNAME = username
SYS_MYSQL_ATTR_DOMAIN = domain
SYS_MYSQL_ATTR_PASSWD = password
SYS_MYSQL_ATTR_CLEARPW = clearpwd
SYS_MYSQL_ATTR_QUOTA = quota
SYS_MYSQL_ATTR_NDQUOTA = netdiskquota
SYS_MYSQL_ATTR_HOME = homedir
SYS_MYSQL_ATTR_MAILDIR = maildir
SYS_MYSQL_ATTR_DISABLEWEBMAIL = disablewebmail
SYS_MYSQL_ATTR_DISABLENETDISK = disablenetdisk
SYS_MYSQL_ATTR_DISABLEPWDCHANGE = disablepwdchange
SYS_MYSQL_ATTR_ACTIVE = active
SYS_MYSQL_ATTR_PWD_QUESTION = question
SYS_MYSQL_ATTR_PWD_ANSWER = answer
SYS_LDAP_BASE = o=extmailAccount,dc=example.com
SYS_LDAP_RDN = cn=Manager,dc=example.com
SYS_LDAP_PASS = secret
SYS_LDAP_HOST = localhost
SYS_LDAP_ATTR_USERNAME = mail
SYS_LDAP_ATTR_DOMAIN = virtualDomain
SYS_LDAP_ATTR_PASSWD = userPassword
SYS_LDAP_ATTR_CLEARPW = clearPassword
SYS_LDAP_ATTR_QUOTA = mailQuota
SYS_LDAP_ATTR_NDQUOTA = netdiskQuota
SYS_LDAP_ATTR_HOME = homeDirectory
SYS_LDAP_ATTR_MAILDIR = mailMessageStore
SYS_LDAP_ATTR_DISABLEWEBMAIL = disablewebmail
SYS_LDAP_ATTR_DISABLENETDISK = disablenetdisk
SYS_LDAP_ATTR_DISABLEPWDCHANGE = disablePasswdChange
SYS_LDAP_ATTR_ACTIVE = active
SYS_LDAP_ATTR_PWD_QUESTION = question
SYS_LDAP_ATTR_PWD_ANSWER = answer
SYS_AUTHLIB_SOCKET = /usr/local/courier-authlib/var/spool/authdaemon/socket
SYS_G_ABOOK_TYPE = file
SYS_G_ABOOK_LDAP_HOST = localhost
SYS_G_ABOOK_LDAP_BASE = ou=AddressBook,dc=example.com
SYS_G_ABOOK_LDAP_ROOTDN = cn=Manager,dc=example.com
SYS_G_ABOOK_LDAP_ROOTPW = secret
SYS_G_ABOOK_LDAP_FILTER = objectClass=OfficePerson
SYS_G_ABOOK_FILE_PATH = /var/www/extsuite/extmail/globabook.cf
SYS_G_ABOOK_FILE_LOCK = 1
SYS_G_ABOOK_FILE_CONVERT = 0
SYS_G_ABOOK_FILE_CHARSET = utf-8

　　4、配置 extman 文件

# cd /var/www/extsuite/extmail
# cp -rp webman.cf.default webman.cf

　　　更改 extman.cf 配置

# cat /var/www/extsuite/extman/webman.cf |grep -v ^$ |grep -v ^#

SYS_CONFIG = /var/www/extsuite/extman/
SYS_LANGDIR = /var/www/extsuite/extman/lang
SYS_TEMPLDIR = /var/www/extsuite/extman/html
SYS_MAILDIR_BASE = /home/18mail
SYS_SHOW_WARN = 0
SYS_SESS_DIR = /tmp/extman/
SYS_CAPTCHA_ON = 1
SYS_CAPTCHA_KEY = r3s9b6a7
SYS_CAPTCHA_LEN = 6
SYS_PURGE_DATA = 0
SYS_PSIZE = 20
SYS_APP_TYPE = ExtMan
SYS_TEMPLATE_NAME = default
SYS_DEFAULT_EXPIRE = 1y
SYS_GROUPMAIL_SENDER = [email protected]
SYS_DEFAULT_SERVICES = webmail,smtpd,smtp,pop3,netdisk
SYS_ISP_MODE = no
SYS_DOMAIN_HASHDIR = yes
SYS_DOMAIN_HASHDIR_DEPTH = 2x2
SYS_USER_HASHDIR = yes
SYS_USER_HASHDIR_DEPTH = 2x2

SYS_MIN_UID = 500
SYS_MIN_GID = 100
SYS_DEFAULT_UID = 1000
SYS_DEFAULT_GID = 1000
SYS_QUOTA_MULTIPLIER = 1048576
SYS_QUOTA_TYPE = courier
SYS_DEFAULT_MAXQUOTA = 500
SYS_DEFAULT_MAXALIAS = 100
SYS_DEFAULT_MAXUSERS = 100
SYS_DEFAULT_MAXNDQUOTA = 500
SYS_USER_DEFAULT_QUOTA = 5
SYS_USER_DEFAULT_NDQUOTA = 5
SYS_USER_DEFAULT_EXPIRE = 1y
SYS_BACKEND_TYPE = mysql
SYS_CRYPT_TYPE = md5crypt
SYS_MYSQL_USER = extman
SYS_MYSQL_PASS = extmail
SYS_MYSQL_DB = extmail
SYS_MYSQL_HOST = localhost
SYS_MYSQL_SOCKET = /var/lib/mysql/mysql.sock
SYS_MYSQL_TABLE = manager
SYS_MYSQL_ATTR_USERNAME = username
SYS_MYSQL_ATTR_PASSWD = password
SYS_LDAP_BASE = dc=extmail.org
SYS_LDAP_RDN = cn=Manager,dc=extmail.org
SYS_LDAP_PASS = secret
SYS_LDAP_HOST = localhost
SYS_LDAP_ATTR_USERNAME = mail
SYS_LDAP_ATTR_PASSWD = userPassword
SYS_RRD_DATADIR = /var/lib
SYS_RRD_TMPDIR = /tmp/viewlog
SYS_RRD_QUEUE_ON = yes
SYS_CMDSERVER_SOCK = /tmp/cmdserver.sock 
SYS_CMDSERVER_MAXCONN = 5
SYS_CMDSERVER_PID = /var/run/cmdserver.pid
SYS_CMDSERVER_LOG = /var/log/cmdserver.log
SYS_CMDSERVER_AUTHCODE = your_auth_code_here
SYS_IGNORE_SERVER_LIST = web

　　5、extmail 数据库导入；
　　　　5.1 导入前需要更改两项配置；
　　　　my.cnf 取消 SSL 验证；不然会报 ‘ssl_cipher‘ 错？

# vi /etc/my.cnf 
注释这一行；待数据导入之后再取消注释；
# sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES

　　　　5.2 编辑 extmail.sql 数据库文件

　　　　msyql 数据库不能识别 TYPE=MyISAM，需要把TYPE=MyISAM 更改为 ENGINE=MyISAM

# sed -i ‘s/TYPE/ENGINE/g‘ /var/www/extsuite/extman/docs/extmail.sql

　　　　5.3 编辑 init.sql
　　　　可以把默认的域更改成自己域 (我自己的是 18mail.com)

# sed -i ‘s/extmail.org/18mail.com/g‘ /var/www/extsuite/extman/docs/init.sql

　　　　5.4 开始导入数据库；

mysql -u root -p < /var/www/extsuite/extman/docs/extmail.sql
mysql -u root -p < /var/www/extsuite/extman/docs/init.sql

技术分享图片

　　5.5 数据导入成功后设置两个extmail 远程账户；

# mysql -uroot -p 进入数据库 设置extmail库 localhost远程账户
# /etc/init.d/msyqld start

> use extmail;
> grant all on extmail.* to ‘extmail‘@‘%‘ identified by ‘extmail‘;
> flush privilege;

> use extmail;
> grant all on extmail.* to ‘extman‘@‘%‘ identified by ‘extmail‘;
> flush privileges;

# chkconfig mysqld on

六、配置 postfix 结合 extmail;

　　1、拷贝 extmail 下的数据链接文件到 postfix 下

拷贝数据连接文件:

# mkdir /etc/postfix/sql
# cp -rp /var/www/extsuite/extman/docs/mysql_virtual_* /etc/postfix/sql

　　 2、设置 postfix SMTP认证和虚拟账户；

　　　　2.1 配置 main.cf

# vi /etc/postfix/main.cf

queue_directory = /var/spool/postfix
command_directory = /usr/sbin
daemon_directory = /usr/libexec/postfix
data_directory = /var/lib/postfix
mail_owner = postfix
inet_interfaces = all
inet_protocols = all

myhostname = mail.18mail.com
mydomain = 18mail.com
myorigin = $mydomain
# mydestination = $myhostname, localhost.$mydomain, localhost
mydestination = 
mynetworks = 0.0.0.0/0
# 可以设置允许的网段访问

local_recipient_maps =

unknown_local_recipient_reject_code = 550
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases

debug_peer_level = 2
debugger_command =
PATH=/bin:/usr/bin:/usr/local/bin:/usr/X11R6/bin
ddd $daemon_directory/$process_name $process_id & sleep 5
sendmail_path = /usr/sbin/sendmail.postfix
newaliases_path = /usr/bin/newaliases.postfix
mailq_path = /usr/bin/mailq.postfix
setgid_group = postdrop
html_directory = no
manpage_directory = /usr/share/man
sample_directory = /usr/share/doc/postfix-2.6.6/samples
readme_directory = /usr/share/doc/postfix-2.6.6/README_FILES

#启用SMTP认证
smtpd_sasl_auth_enable = yes
smtpd_sasl_local_domain = $myhostname
smtpd_sasl_type = dovecot
smtpd_sasl_security_options = noanonymous
smtpd_sasl_path = /var/spool/postfix/private/auth
smtpd_banner = $myhostname ESMTP $mail_name
smtpd_sender_restrictions =
permit_mynetworks,
reject_sender_login_mismatch,
reject_authenticated_sender_login_mismatch,
reject_unauthenticated_sender_login_mismatch

smtpd_sasl_application_name = smtpd
broken_sasl_auth_clients = yes
smtpd_recipient_restrictions = permit_mynetworks,permit_sasl_authenticated,reject_unauth_destination
smtpd_sasl_security_restrictions = permit_mynetworks,permit_sasl_authenticated,reject_unauth_destination
smtpd_client_restrictions = permit_mynetworks,permit_sasl_authenticated

smtpd_sender_login_maps =
mysql:/etc/postfix/sql/mysql_virtual_sender_maps.cf,
mysql:/etc/postfix/sql/mysql_virtual_alias_maps.cf


#启用虚拟用户
virtual_mailbox_base = /home/18mail/
# 前面创建的邮件18mail账户  配置链接前面从extman拷贝的 mysql_virtual* 文件
virtual_mailbox_domains = proxy:mysql:/etc/postfix/sql/mysql_virtual_domains_maps.cf
proxy_read_maps = $local_recipient_maps $mydestination $virtual_alias_maps $virtual_alias_domains $virtual_mailbox_maps $virtual_mailbox_domains $relay_recipient_maps $relay_domains $canonical_maps $sender_canonical_maps $recipient_canonical_maps $relocated_maps $transport_maps $mynetworks $virtual_mailbox_limit_maps

virtual_alias_maps = mysql:/etc/postfix/sql/mysql_virtual_alias_maps.cf
virtual_mailbox_domains = mysql:/etc/postfix/sql/mysql_virtual_domains_maps.cf
virtual_mailbox_maps = mysql:/etc/postfix/sql/mysql_virtual_mailbox_maps.cf
virtual_transport = maildrop:


virtual_uid_maps = static:5000
virtual_gid_maps = static:5000
virtual_transport = dovecot
dovecot_destination_recipient_limit = 1

　　2.2配置 master.cf

添加以下两行；flaage 前需要有空格
# vi /etc/postfix/master.cf

dovecot unix - n n - - pipe
　　flags=DRhu user=18mail:18mail argv=/usr/libexec/dovecot/dovecot-lda -f ${sender} -d ${recipient}

　　3、配置 dovecot

　　　　3.1 dovecot.conf 文件

[[email protected] dovecot]# vi dovecot.conf 

protocols = imap pop3
listen = *
# 日志目录 文件需要设置为 dovecot 权限；
info_log_path = /var/log/dovecot-info.log
debug_log_path = /var/log/dovecot-debug.log
dict {
#quota = mysql:/etc/dovecot/dovecot-dict-sql.conf.ext
#expire = sqlite:/etc/dovecot/dovecot-dict-sql.conf.ext
}
!include conf.d/*.conf
!include_try /etc/dovecot/local.conf

# dovecot-sql.conf.ext 下面自己创建编辑
passdb {
driver = sql
args = /etc/dovecot/dovecot-sql.conf.ext
# 这个可以在当前目录手动创建
}

# 18mail 为前面创建的邮箱专用账户
userdb {
driver = static
args = uid=5000 gid=5000 home=/home/18mail/%d/%n

}

####调试日志
auth_debug_passwords=yes
mail_debug=yes
auth_verbose=yes
auth_verbose_passwords=plain

　　3.2 手动创建 dovecot-sql.conf.ext 认证文件

需要设置 extmail 账户密码 
# vi dovecot-sql.conf.ext

driver = mysql
connect = host=localhost dbname=extmail user=extmail password=extmail
default_pass_scheme = MD5-CRYPT
password_query = SELECT username AS user,password FROM mailbox WHERE username = ‘%u‘ AND active=‘1‘ 
user_query = SELECT maildir, 5000 AS uid, 5000 AS gid, CONCAT(‘dict:storage=‘,floor(quota/1000),‘ proxy::quota‘) as quota FROM mailbox WHERE username = ‘%u‘ AND active=‘1‘

　　4、配置之后进行重启

# service postfix restart
# chkconfig postfix on
# service dovecot restart
# chkconfig dovecot on

七、配置 httpd

　　1、unix-syslog 安装

　　配置httpd后启动时会有unix-syslog 报错；需要安装 UNIX-syslog 模块；

# wget http://www.cpan.org/authors/id/M/MH/MHARNISCH/Unix-Syslog-1.1.tar.gz
解压缩进行编译安装

# cd Unix-Syslog
# perl Makefile.PL
# make && make install

　　2、配置 extmail 虚拟主机；

　　　　2.1 配置httpd.conf

　　　　最后添加两行指定一个extmail虚拟主机；

# vi /etc/httpd/conf/httpd.conf
# 指定extmail虚拟主机

NameVirtualHost *:80
Include conf/vhost_extmail.conf

　　　　2.2 配置虚拟 vhost_extmail.conf 主机：

# vi /var/www/conf/vhost_extmail.conf 

<VirtualHost *:80>
ServerName mail.18mail.com
DocumentRoot /var/www/extsuite/extmail/html/

ScriptAlias /extmail/cgi/    /var/www/extsuite/extmail/cgi/
Alias /extmail    /var/www/extsuite/extmail/html/
ScriptAlias /extman/cgi/    /var/www/extsuite/extman/cgi/
Alias /extman    /var/www/extsuite/extman/html/
SuexecUserGroup 18mail 18mail

</VirtualHost>

　　3、启动 web

# /etc/init.d/httpd restart
# chkconfig httpd on

八、防火墙配置

　　1、配置 iptables 开放相关端口 25 110 143 80 3306 （由于没有SSL 验证）

# vi /etc/sysconfig/iptables

-A INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT
-A INPUT -m state --state NEW -m tcp -p tcp --dport 18 -j ACCEPT
-A INPUT -m state --state NEW -m tcp -p tcp --dport 25 -j ACCEPT
-A INPUT -m state --state NEW -m tcp -p tcp --dport 53 -j ACCEPT
-A INPUT -m state --state NEW -m tcp -p tcp --dport 80 -j ACCEPT
-A INPUT -m state --state NEW -m tcp -p tcp --dport 3306 -j ACCEPT-A INPUT -m state --state NEW -m tcp -p tcp --dport 110 -j ACCEPT
-A INPUT -m state --state NEW -m tcp -p tcp --dport 143 -j ACCEPT

重新启动：
# /ect/init.d/iptables restart