centos下Extmail的搭建

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1 Extmail概述  ExtMail Solution 是一个基于优秀开源软件的电子邮件系统解决方案，核心部件包括了Postfix、Amavisd-new、ClamAV、ExtMail、ExtMan、Courier系列软件。是一个功能相对比较齐全的免费电子邮件系统。
  而其中Extmail 是一个以perl语言编写，面向大容量/ISP级应用，免费的高性能Webmail软件，主要包括ExtMail、Extman两个部分的程序套件。ExtMail套件用于提供从浏览器中登录、使用邮件系统的Web操作界面，而Extman套件用于提供从浏览器中管理邮件系统的Web操作界面。
2 Extmail工作原理

  Extmail的核心部分是postfix，是一种web页面，可以创建账号，可以收发邮件。extman可以账号注册。账号存放在mysql里面。postfix发信件，dovecot收信件。利用outlook收信件（docecot）和发信件（postfix）都要通过mysql查询。发信件（postfix）要提取mysql账号信息要通过courier-authlib。是基于虚拟帐号的邮件系统。
3 Extmail服务器搭建3.1 安装相关软件包
[iyunv@Qserver ~]# yum --disablerepo=\* --enablerepo=c6-media install httpd mysql  mysql-server  mysql-devel  openssl-devel  dovecot  perl-DBD-MySQL  tcl  tcl-devel  libart_lgpl  libart_lgpl-devel libtool-ltdl  libtool-ltdl-devel  expect
安装开发工具包
[iyunv@Qserver ~]# yum --disablerepo=\* --enablerepo=c6-media grouplist 查看
"Development Libraries""Development Tools""Server Platform Development"

3.2 启动httpd  mysqld服务

[iyunv@Qserver ~]# service httpd start
[iyunv@Qserver ~]# service mysqld restart
[iyunv@Qserver ~]# chkconfig httpd on
[iyunv@Qserver ~]# chkconfig mysqld on   设置开机启动
[iyunv@Qserver ~]# netstat -tupln |grep httpd
[iyunv@Qserver ~]# netstat -tupln |grep mysqld
[iyunv@Qserver ~]# mysqladmin -u root -p password '123'  为数据库设置密码

3.3 安装Postfix

（1）删除原有postfix 新建用户
[iyunv@Qserver ~]# rpm -qa  postfix  查看已安装postfix
postfix-2.6.6-2.2.el6_1.i686
[iyunv@Qserver ~]# yum --disablerepo=\* --enablerepo=c6-media remove postfix   卸载postfix
[iyunv@Qserver ~]# rpm -qa  postfix        删除用户和组
[iyunv@Qserver ~]# groupdel postfix
[iyunv@Qserver ~]# rm -rf /var/spool/postfix    删除用户目录

[iyunv@Qserver ~]# groupadd -g 2525 postfix     创建用户组        
[iyunv@Qserver ~]# useradd -g postfix -u 2525 -s /sbin/nologin -M postfix  
[iyunv@Qserver ~]# groupdel postdrop
[iyunv@Qserver ~]# groupadd -g 2526 postdrop
[iyunv@Qserver ~]# useradd -g postdrop -u 2526 -s /bin/false -M postdrop
查看/etc/passwd/

（2）安装postfix
[iyunv@Qserver src]# tar -zxvf postfix-2.8.2.tar.gz -C /usr/local/src/
[iyunv@Qserver src]# cd postfix-2.8.2/
已有makefile文件，不需要./configure
[iyunv@Qserver postfix-2.8.2]# make makefiles 'CCARGS=-DHAS_MYSQL -I/usr/include/mysql -DUSE_SASL_AUTH -DUSE_CYRUS_SASL -I/usr/include/sasl  -DUSE_TLS ' 'AUXLIBS=-L/usr/lib/mysql -lmysqlclient -lz -lm -L/usr/lib/sasl2 -lsasl2   -lssl -lcrypto'
错误 ：

安装 db4-devel 和gcc
[iyunv@Qserver postfix-2.8.2]make && make install
按照以下的提示输入相关的路径([]号中的是缺省值，”]”后的是输入值，省略的表示采用默认值)
install_root: [/] /
tempdir: [/usr/local/src/ postfix-2.6.5] /tmp
config_directory: [/etc/postfix] /etc/postfix
daemon_directory: [/usr/libexec/postfix]
command_directory: [/usr/sbin]
queue_directory: [/var/spool/postfix]
sendmail_path: [/usr/sbin/sendmail]
newaliases_path: [/usr/bin/newaliases]
mailq_path: [/usr/bin/mailq]
mail_owner: [postfix]
setgid_group: [postdrop]   
html_directory: [no] /var/www/postfix_html
manpages: [/usr/local/man]
readme_directory: [no]
（4）postfix的启动
[iyunv@Qserver postfix-2.8.2]# newaliases 生成别名二进制文件步骤如果忽略，会造成postfix效率低
创建临时目录，把光盘上的postfix rpm软件包拷到临时目录下，这个包里面有postfix的控制脚本
[iyunv@Qserver cdrom]# cp /media/cdrom/Packages/postfix-2.6.6-2.2.el6_1.i686.rpm  /tmp/abc/
[iyunv@Qserver cdrom]# cd /tmp/abc/
[iyunv@Qserver abc]# rpm2cpio postfix-2.6.6-2.2.el6_1.i686.rpm |cpio -id  拆解rpm包

[iyunv@Qserver init.d]# cp -p postfix /etc/init.d/
[iyunv@Qserver init.d]# service postfix start

[iyunv@Qserver ~]# tail -f /var/log/maillog   查看日志
warning: not owned by postfix: /var/lib/postfix/./master.lock   文件无所有者
[iyunv@Qserver ~]# chown -R postfix /var/lib/postfix/   修改权限
[iyunv@Qserver ~]# chkconfig --add postfix
[iyunv@Qserver ~]# chkconfig postfix on   开机自启
（5）postfix配置
[iyunv@Qserver ~]#  vim /etc/postfix/main.cf
75 myhostname = mail.cj.com
83 mydomain = cj.com
98 myorigin = $myhostname
99 myorigin = $mydomain
113 inet_interfaces = all
161 mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain
260 mynetworks = 192.168.30.0/24, 127.0.0.0/8   网络为本机网络
（6）验证
[iyunv@Qserver ~]#  service  postfix restart
错误：
[iyunv@Qserver ~]# mail user1
-bash: mail: command not found
[iyunv@Qserver ~]# yum install mailx  安装mailx
[iyunv@Qserver ~]# mail user1
Subject: 177
qqqqqccccc

.                     以点结束
EOT
[iyunv@Qserver ~]# tail -f /var/log/maillog  查看邮件日志

也可以
[iyunv@Qserver ~]# cd /var/spool/mail/   
[iyunv@Qserver mail]# vim user1

3.4 postfix开启基于cyrus-sasl的认证功能

（1）查看已安装sasl有关的软件包
[iyunv@Qserver mail]# rpm -qa |grep sasl   
cyrus-sasl-lib-2.1.23-13.el6_3.1.i686
cyrus-sasl-2.1.23-13.el6_3.1.i686
cyrus-sasl-devel-2.1.23-13.el6_3.1.i686
cyrus-sasl-md5-2.1.23-13.el6_3.1.i686
cyrus-sasl-plain 没有安装
[iyunv@Qserver Packages]# ll |grep sasl   查看sasl安装软件包
[iyunv@Qserver Packages]# yum install cyrus-sasl-plain-2.1.23-13.el6_3.1.i686.rpm  
（2）postfix与sasl结合,编辑Postfix文件
[iyunv@Qserver ~]# vim /etc/postfix/main.cf

以下是文本
############################CYRUS-SASL############################
broken_sasl_auth_clients = yes                          smtpd_recipient_restrictions=permit_mynetworks,permit_sasl_authenticated,reject_invalid_hostname,reject_non_fqdn_hostname,reject_unknown_sender_domain,reject_non_fqdn_sender,reject_non_fqdn_recipient,reject_unknown_recipient_domain,reject_unauth_pipelining,reject_unauth_destination
smtpd_sasl_auth_enable = yes
smtpd_sasl_local_domain = $myhostname
smtpd_sasl_security_options = noanonymous
smtpd_banner = Welcome to our $myhostname ESMTP,Warning: Version not Available!
（3）验证
[iyunv@Qserver ~]# service postfix restart
[iyunv@Qserver ~]# telnet 127.0.0.1 25
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '^]'.
220 Welcome to our mail.cj.com ESMTP,Warning: Version not Available!

（4）sasl配置
[iyunv@Qserver ~]#  mkdir /usr/local/lib/sasl2
[iyunv@Qserver ~]# vim /usr/local/sasl2smtpd.conf
[iyunv@Qserver ~]# service saslauthd start
[iyunv@Qserver ~]# chkconfig --add saslauthd
[iyunv@Qserver ~]# chkconfig saslauthd on

3.5安装Courier authentication library

（1）解压安装
[iyunv@Qserver ~]# tar -jxvf courier-authlib-0.63.0.tar.bz2  -C  /usr/local/src/
[iyunv@Qserver ~]# cd /usr/local/src/courier-authlib-0.63.0/
[iyunv@Qserver courier-authlib-0.63.0]#  编译
./configure  \
--prefix=/usr/local/courier-authlib \
--sysconfdir=/etc \
--with-authmysql  \
--with-mysql-libs=/usr/lib/mysql \
--with-mysql-includes=/usr/include/mysql \
--with-redhat \
--with-authmysqlrc=/etc/authmysqlrc \
--with-authdaemonrc=/etc/authdaemonrc
[iyunv@Qserver courier-authlib-0.63.0]# make && make install 安装
（2）配置SMTP
vim /usr/local/lib/sasl2/smtpd.conf

（3）修改配置
[iyunv@Qserver ~]# chmod 755 /usr/local/courier-authlib/var/spool/authdaemon/
[iyunv@Qserver ~]# cp /etc/authdaemonrc.dist /etc/authdaemonrc
[iyunv@Qserver ~]# cp /etc/authmysqlrc.dist  /etc/authmysqlrc
[iyunv@Qserver ~]# vim /etc/authdaemonrc
vim /etc/authdaemonrc
authmodulelist="authmysql"       修改
authmodulelistorig="authmysql"
daemons=10
[iyunv@Qserver ~]# vim /etc/authmysqlrc
MYSQL_SERVER localhost
MYSQL_PORT 3306                   (指定你的mysql监听的端口，这里使用默认的3306)
MYSQL_USERNAME  extmail      (这时为后文要用的数据库的所有者的用户名)
MYSQL_PASSWORD extmail        (密码)
MYSQL_SOCKET  /var/lib/mysql/mysql.sock
MYSQL_DATABASE  extmail
MYSQL_USER_TABLE  mailbox
MYSQL_CRYPT_PWFIELD  password
MYSQL_UID_FIELD  '2525'
MYSQL_GID_FIELD  '2525'
MYSQL_LOGIN_FIELD  username
MYSQL_HOME_FIELD  concat('/var/mailbox/',homedir)
MYSQL_NAME_FIELD  name
MYSQL_MAILDIR_FIELD  concat('/var/mailbox/',maildir)
产生启动控制脚本
[iyunv@Qserver courier-authlib-0.63.0]# cp courier-authlib.sysvinit /etc/init.d/courier-authlib
[iyunv@Qserver courier-authlib-0.63.0]# chmod 755 /etc/init.d/courier-authlib  增加可执行权限
[iyunv@Qserver courier-authlib-0.63.0]# chkconfig --add courier-authlib
[iyunv@Qserver courier-authlib-0.63.0]# chkconfig --level 2345 courier-authlib on
[iyunv@Qserver courier-authlib-0.63.0]# echo "/usr/local/courier-authlib/lib/courier-authlib" >> /etc/ld.so.conf.d/courier-authlib.conf
[iyunv@Qserver courier-authlib-0.63.0]# ldconfig -v  启动courier-authlib服务
[iyunv@Qserver courier-authlib-0.63.0]# mkdir -pv /var/mailbox 新建虚拟用户邮箱所在的目录，并将其权限赋予postfix用户
[iyunv@Qserver courier-authlib-0.63.0]# chown -R postfix /var/mailbox

3.5 postfix支持虚拟域和虚拟用户

（1）编辑/etc/postfix/main.cf
##################Virtual Mailbox Settings#################
virtual_mailbox_base = /var/mailbox
virtual_mailbox_maps = mysql:/etc/postfix/mysql_virtual_mailbox_maps.cf
virtual_mailbox_domains = mysql:/etc/postfix/mysql_virtual_domains_maps.cf
virtual_alias_domains =
virtual_alias_maps = mysql:/etc/postfix/mysql_virtual_alias_maps.cf
virtual_uid_maps = static:2525
virtual_gid_maps = static:2525
virtual_transport = virtual
maildrop_destination_recipient_limit = 1
maildrop_destination_concurrency_limit = 1
####################QUOTA Settings######################
message_size_limit = 14336000
virtual_mailbox_limit = 20971520
virtual_create_maildirsize = yes
virtual_mailbox_extended = yes
virtual_mailbox_limit_maps = mysql:/etc/postfix/mysql_virtual_mailbox_limit_maps.cf
virtual_mailbox_limit_override = yes
virtual_maildir_limit_message = Sorry, the user's maildir has overdrawn his diskspace quota, please Tidy your mailbox and try again later.
virtual_overquota_bounce = yes
(2)使用extman源码目录下docs目录中的extmail.sql和init.sql建立数据库：
[iyunv@Qserver ~]# cd extman-1.1/docs
[iyunv@Qserver docs]# cp mysql_virtual_* /etc/postfix/
//导入数据库
[iyunv@Qserver docs]# mysql -u root -p <extmail.sql
[iyunv@Qserver docs]# mysql -u root -p <init.sql
（3）授予用户extmail访问extmail数据库的权限
[iyunv@Qserver docs]# mysql -u root -p
mysql> GRANT all privileges on extmail.* TO extmail@localhost IDENTIFIED BY 'extmail';
mysql> GRANT all privileges on extmail.* TO extmail@127.0.0.1 IDENTIFIED BY 'extmail';
mysql>  FLUSH PRIVILEGES;
[iyunv@Qserver docs]# service postfix restart

3.6 配置dovecot

（1）编辑dovecot配置文件
[iyunv@Qserver ~]# cd /etc/dovecot/conf.d
vim 10-mail.conf
24  mail_location = maildir:/var/mailbox/%d/%n/Maildir

[iyunv@Qserver conf.d]# vim /etc/postfix/main.cf
415 home_mailbox = Maildir/
[iyunv@Qserver conf.d]#  mv auth-sql.conf.ext auth-sql.conf
[iyunv@Qserver conf.d]# vim auth-sql.conf

[iyunv@Qserver dovecot]# vim /etc/dovecot-mysql.conf
driver = mysql
connect = host=localhost dbname=extmail user=extmail password=extmail  (如mysql源码安装，host=/tmp/mysql.sock)
default_pass_scheme = CRYPT
password_query = SELECT username AS user,password AS password FROM mailbox WHERE username = '%u'                           
user_query = SELECT maildir, uidnumber AS uid, gidnumber AS gid FROM mailbox WHERE username = '%u'
[iyunv@Qserver dovecot]# service dovecot start
Starting Dovecot Imap:                                     [  OK  ]
[iyunv@Qserver dovecot]# chkconfig dovecot on

3.7 安装Extmail-1.2

(1)安装
[iyunv@Qserver ~]# tar -zxvf extmail-1.2.tar.gz
[iyunv@Qserver ~]# mkdir -pv /var/www/extsuite
mkdir: created directory `/var/www/extsuite'
[iyunv@Qserver ~]# mv extmail-1.2 /var/www/extsuite/extmail
[iyunv@Qserver ~]# cd /var/www/extsuite/extmail/
[iyunv@Qserver extmail]# cp webmail.cf.default webmail.cf
(2)修改主配置文件

#vi /var/www/extsuite/extmail/webmail.cf
部分修改选项的说明：

SYS_MESSAGE_SIZE_LIMIT = 5242880
用户可以发送的最大邮件

SYS_USER_LANG = en_US
语言选项，可改作：
SYS_USER_LANG = zh_CN

SYS_MAILDIR_BASE = /home/domains
此处即为您在前文所设置的用户邮件的存放目录，可改作：
SYS_MAILDIR_BASE = /var/mailbox

SYS_MYSQL_USER = db_user
SYS_MYSQL_PASS = db_pass
以上两句句用来设置连接数据库服务器所使用用户名、密码和邮件服务器用到的数据库，这里修改为：
SYS_MYSQL_USER = extmail
SYS_MYSQL_PASS = extmail

SYS_MYSQL_HOST = localhost
指明数据库服务器主机名，这里默认即可

SYS_MYSQL_TABLE = mailbox
SYS_MYSQL_ATTR_USERNAME = username
SYS_MYSQL_ATTR_DOMAIN = domain
SYS_MYSQL_ATTR_PASSWD = password
以上用来指定验正用户登录里所用到的表，以及用户名、域名和用户密码分别对应的表中列的名称；这里默认即可

SYS_AUTHLIB_SOCKET = /var/spool/authdaemon/socket
此句用来指明authdaemo socket文件的位置，这里修改为：
SYS_AUTHLIB_SOCKET = /usr/local/courier-authlib/var/spool/authdaemon/socket
(3)apache相关配置
[iyunv@Qserver extmail]#  vim  /etc/httpd/conf/httpd.conf

1010 <VirtualHost *:80>
1011 ServerName mail.test.com
1012 DocumentRoot /var/www/extsuite/extmail/html/
1013 ScriptAlias /extmail/cgi /var/www/extsuite/extmail/cgi
1014 Alias /extmail /var/www/extsuite/extmail/html
1015 SuexecUserGroup postfix postfix
1016 </VirtualHost>
[iyunv@Qserver extmail]# service httpd restart   重启httpd服务
[iyunv@Qserver extmail]#yum install perl-CGI*
(4)依赖关系的解决
extmail将会用到perl的Unix::syslogd功能，您可以去http://search.cpan.org搜索下载原码包进行安装。
[iyunv@Qserver ~]# tar -zxvf Unix-Syslog-0.100.tar.gz -C /usr/local/src/
cd /usr/local/src/Unix-Syslog-0.100/
perl Makefile.PL
make && make install
（5）启动apache服务
[iyunv@Qserver ~]# service httpd start
[iyunv@Qserver ~]# chkconfig httpd on

3.8安装Extman-1.1

[iyunv@Qserver ~]# mv extman-1.1 /var/www/extsuite/extman
[iyunv@Qserver ~]# cd /var/www/extsuite/extman
[iyunv@Qserver extman]# mv webman.cf.default webman.cf   
[iyunv@Qserver extman]# vim webman.cf

[iyunv@Qserver extman]# chown -R postfix.postfix /var/www/extsuite/extman/cgi/
[iyunv@Qserver extman]# vim /etc/httpd/conf/httpd.conf
加上这两行
1015 ScriptAlias /extman/cgi /var/www/extsuite/extman/cgi
1016 Alias /extman /var/www/extsuite/extman/html

4 测试

（1）访问192.168.30.4

（2）进入后台管理
用户名root@extmail.org
密码extmail*123*
注册域

（3）注册邮箱uesr2@b.com 并发送邮件测试

至此 extmail搭建完毕