CentOS7下搭建postfix郵箱服務器並實現extmail的web訪問

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筆記內容：CentOS7下搭建postfix郵箱服務器並實現extmail的web訪問
筆記日期：2017-11-20php

閒來無事想着嘗試使用postfix搭建一個郵箱服務器，我是邊搭建邊寫這個筆記，搭建過程當中遇到坑也會一併記錄，使用的系統版本以下：html

[root@localhost ~]# cat /etc/redhat-release
CentOS Linux release 7.2.1511 (Core)

本示例基於LNMP環境。mysql

1. 準備工做

關閉selinuxlinux

[root@localhost ~]# setenforce 0
[root@localhost ~]# getenforce 
Permissive
[root@localhost ~]#

關閉firewalld防火牆，並清空iptables規則：nginx

[root@localhost ~]# systemctl stop firewalld
[root@localhost ~]# iptables -F
[root@localhost ~]# iptables -X
[root@localhost ~]# iptables -nvL
Chain INPUT (policy ACCEPT 38 packets, 7291 bytes)
 pkts bytes target     prot opt in     out     source               destination         

Chain FORWARD (policy ACCEPT 0 packets, 0 bytes)
 pkts bytes target     prot opt in     out     source               destination         

Chain OUTPUT (policy ACCEPT 12 packets, 1208 bytes)
 pkts bytes target     prot opt in     out     source               destination         
[root@localhost ~]#

因爲CentOS7默認安裝的是MariaDB，因此要添加MySQL的yum源，有些編譯須要的devel包只有epel擴展源有，因此咱們須要把epel源也一併添加。由於是經過wget命令從下載地址中下載，可是最小化安裝的CentOS7不自帶wget命令，還須要先安裝這個命令：c++

yum install -y wget
wget http://dev.mysql.com/get/mysql-community-release-el7-5.noarch.rpm
rpm -ivh mysql-community-release-el7-5.noarch.rpm
wget http://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
rpm -ivh epel-release-latest-7.noarch.rpm

2. 安裝postfix

首先須要安裝編譯環境及其餘所須要的包，省得一會編譯過程當中老報缺乏包的錯誤，由於須要安裝的包有點多，因此這個過程有點慢：web

yum install nginx vim gcc gcc-c++ openssl openssl-devel db4-devel ntpdate mysql mysql-devel mysql-server bzip2 php-mysql 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  -y

安裝完以上所需的包後，開始編譯安裝postfix：sql

1.首先卸載系統自帶的postfix，並刪除postfix用戶，從新指定uid、gid建立新用戶postfix，postdrop，嫌一條條命令去執行有點麻煩就寫成腳本文件去執行：數據庫

yum remove postfix -y
userdel postfix
groupdel postdrop
groupadd -g 2525 postfix
useradd -g postfix -u 2525 -s /sbin/nologin -M postfix
groupadd -g 2526 postdrop
useradd -g postdrop -u 2526 -s /sbin/nologin -M postdrop

2.下載源碼包並解壓編譯（若是下載地址失效就到官網去找下載鏈接）：vim

cd /usr/local/src/
wget http://cdn.postfix.johnriley.me/mirrors/postfix-release/official/postfix-3.0.11.tar.gz
tar -zxvf postfix-3.0.11.tar.gz
cd postfix-3.0.11
make makefiles 'CCARGS=-DHAS_MYSQL -I/usr/include/mysql -DUSE_SASL_AUTH -DUSE_CYRUS_SASL -I/usr/include/sasl -DUSE_TLS ' 'AUXLIBS=-L/usr/lib64/mysql -lmysqlclient -lz -lrt -lm -L/usr/lib64/sasl2 -lsasl2   -lssl -lcrypto'
make && make install
echo $?

在make install環節的時候會有個交互式的界面，能夠自定義一些目錄，我這裏只更改了第二項臨時文件目錄，其餘的都選擇了默認目錄：

Please specify the prefix for installed file names. Specify this ONLY
if you are building ready-to-install packages for distribution to OTHER
machines. See PACKAGE_README for instructions.
install_root: [/]

Please specify a directory for scratch files while installing Postfix. You
must have write permission in this directory.
tempdir: [/usr/local/src/postfix-3.0.11] /tmp/extmail // 就只更改這一項爲tmp目錄，其餘的所有默認

Please specify the final destination directory for installed Postfix
configuration files.
config_directory: [/etc/postfix]

Please specify the final destination directory for installed Postfix
administrative commands. This directory should be in the command search
path of adminstrative users.
command_directory: [/usr/sbin]

Please specify the final destination directory for installed Postfix
daemon programs. This directory should not be in the command search path
of any users.
daemon_directory: [/usr/libexec/postfix]

Please specify the final destination directory for Postfix-writable
data files such as caches or random numbers. This directory should not
be shared with non-Postfix software.
data_directory: [/var/lib/postfix]

Please specify the final destination directory for the Postfix HTML
files. Specify "no" if you do not want to install these files.
html_directory: [no]

Please specify the owner of the Postfix queue. Specify an account with
numerical user ID and group ID values that are not used by any other
accounts on the system.
mail_owner: [postfix]

Please specify the final destination pathname for the installed Postfix
mailq command. This is the Sendmail-compatible mail queue listing command.
mailq_path: [/usr/bin/mailq]

Please specify the final destination directory for the Postfix on-line
manual pages. You can no longer specify "no" here.
manpage_directory: [/usr/local/man]

Please specify the final destination pathname for the installed Postfix
newaliases command. This is the Sendmail-compatible command to build
alias databases for the Postfix local delivery agent.
newaliases_path: [/usr/bin/newaliases]

Please specify the final destination directory for Postfix queues.
queue_directory: [/var/spool/postfix]

Please specify the final destination directory for the Postfix README
files. Specify "no" if you do not want to install these files.
readme_directory: [no]

Please specify the final destination pathname for the installed Postfix
sendmail command. This is the Sendmail-compatible mail posting interface.
sendmail_path: [/usr/sbin/sendmail]

Please specify the group for mail submission and for queue management
commands. Specify a group name with a numerical group ID that is
not shared with other accounts, not even with the Postfix mail_owner
account. You can no longer specify "no" here.
setgid_group: [postdrop]

Please specify the final destination directory for Postfix shared-library
files.
shlib_directory: [no]

3.更改目錄的屬主和屬組：

chown -R postfix:postdrop /var/spool/postfix
chown -R postfix:postdrop /var/lib/postfix/
chown root /var/spool/postfix
chown -R root /var/spool/postfix/pid

4.修改postfix的配置文件：

[root@localhost ~]# vim /etc/postfix/main.cf
myhostname = mail.everyoo.com        //設置主機名
mydomain = everyoo.com        //指定域名
myorigin = $mydomain        //指明發件人所在的域名
inet_interfaces =         //all指定postfix系統監聽的網絡接口
mydestination = $myhostname, localhost.$mydomain, localhost,$mydomain        //指定postfix接收郵件時收件人的域名 [使用虛擬域須要禁用]
mynetworks_style = host        //指定信任網段類型
mynetworks = 192.168.77.1/24, 127.0.0.0/8        //指定信任的客戶端
relay_domains = $mydestination        //指定容許中轉郵件的域名
alias_maps = hash:/etc/aliases        //設置郵件的別名

5.而後須要在/etc/init.d/目錄下提供一個腳原本管理postfix的啓動與中止：

[root@localhost /var/www/extsuite/extman]# vim /etc/init.d/postfix

把下面的內容放在/etc/init.d/postfix裏面：

#!/bin/bash
#
# postfix      Postfix Mail Transfer Agent
#
# chkconfig: 2345 80 30
# description: Postfix is a Mail Transport Agent, which is the program \
#              that moves mail from one machine to another.
# processname: master
# pidfile: /var/spool/postfix/pid/master.pid
# config: /etc/postfix/main.cf
# config: /etc/postfix/master.cf

# Source function library.
. /etc/rc.d/init.d/functions

# Source networking configuration.
. /etc/sysconfig/network

# Check that networking is up.
[ $NETWORKING = "no" ] && exit 3

[ -x /usr/sbin/postfix ] || exit 4
[ -d /etc/postfix ] || exit 5
[ -d /var/spool/postfix ] || exit 6

RETVAL=0
prog="postfix"

start() {
     # Start daemons.
     echo -n $"Starting postfix: "
        /usr/bin/newaliases >/dev/null 2>&1
     /usr/sbin/postfix start 2>/dev/null 1>&2 && success || failure $"$prog start"
     RETVAL=$?
     [ $RETVAL -eq 0 ] && touch /var/lock/subsys/postfix
        echo
     return $RETVAL
}

stop() {
  # Stop daemons.
     echo -n $"Shutting down postfix: "
     /usr/sbin/postfix stop 2>/dev/null 1>&2 && success || failure $"$prog stop"
     RETVAL=$?
     [ $RETVAL -eq 0 ] && rm -f /var/lock/subsys/postfix
     echo
     return $RETVAL
}

reload() {
     echo -n $"Reloading postfix: "
     /usr/sbin/postfix reload 2>/dev/null 1>&2 && success || failure $"$prog reload"
     RETVAL=$?
     echo
     return $RETVAL
}

abort() {
     /usr/sbin/postfix abort 2>/dev/null 1>&2 && success || failure $"$prog abort"
     return $?
}

flush() {
     /usr/sbin/postfix flush 2>/dev/null 1>&2 && success || failure $"$prog flush"
     return $?
}

check() {
     /usr/sbin/postfix check 2>/dev/null 1>&2 && success || failure $"$prog check"
     return $?
}

restart() {
     stop
     start
}

# See how we were called.
case "$1" in
  start)
     start
     ;;
  stop)
     stop
     ;;
  restart)
     stop
     start
     ;;
  reload)
     reload
     ;;
  abort)
     abort
     ;;
  flush)
     flush
     ;;
  check)
     check
     ;;
  status)
       status master
     ;;
  condrestart)
     [ -f /var/lock/subsys/postfix ] && restart || :
     ;;
  *)
     echo $"Usage: $0 {start|stop|restart|reload|abort|flush|check|status|condrestart}"
     exit 1
esac

exit $?

爲腳本添加執行權限，並將服務添加到開機啓動項中：

[root@localhost /var/www/extsuite/extman]# chmod +x /etc/init.d/postfix
[root@localhost /var/www/extsuite/extman]# chkconfig --add postfix
[root@localhost /var/www/extsuite/extman]# chkconfig postfix on
[root@localhost /var/www/extsuite/extman]# chown postfix.postfix -R /var/lib/postfix/
[root@localhost /var/www/extsuite/extman]# chown postfix.postfix /var/spool/ -R

3. 安裝dovecot

yum安裝：

[root@localhost ~]# yum install -y dovecot dovecot-mysql

配置dovecot：

[root@localhost ~]# cd /etc/dovecot/
[root@localhost dovecot]# vim dovecot.conf     //直接在配置文件最後添加便可
protocols = imap pop3
!include conf.d/*.conf
listen = *
base_dir = /var/run/dovecot/
[root@localhost dovecot]# cd conf.d/
[root@localhost conf.d]# vim 10-auth.conf
disable_plaintext_auth = no
[root@localhost conf.d]# vim 10-mail.conf
mail_location = maildir:~/Maildir
mail_location = maildir:/var/mailbox/%d/%n/Maildir
mail_privileged_group = mail
[root@localhost conf.d]# vim 10-ssl.conf
ssl = no
[root@localhost conf.d]# vim 10-logging.conf 
log_path = /var/log/dovecot.log
info_log_path = /var/log/dovecot.info
log_timestamp = "%Y-%m-%d %H:%M:%S "
[root@localhost conf.d]# cp auth-sql.conf.ext auth-sql.conf
[root@localhost conf.d]# vim auth-sql.conf
passdb {  
    driver = sql        

    # Path for SQL configuration file, see example-config/dovecot-sql.conf.ext  
    args = /etc/dovecot/dovecot-sql.conf.ext
}

userdb {  
    driver = sql  
    args = /etc/dovecot/dovecot-sql.conf.ext
}

編輯dovecot經過mysql認證的配置文件：

[root@localhost conf.d]# vim /etc/dovecot-mysql.conf
driver = mysql
connect = host=localhost dbname=extmail user=extmail password=extmail
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'

4. 安裝courier-authlib

下載解壓並編譯：

[root@localhost ~]# cd /usr/local/src/
[root@localhost /usr/local/src]#  wget https://sourceforge.net/projects/courier/files/authlib/0.66.2/courier-authlib-0.66.2.tar.bz2
[root@localhost /usr/local/src]# tar -jxvf courier-authlib-0.66.2.tar.bz2
[root@localhost /usr/local/src]# cd courier-authlib-0.66.2
[root@localhost /usr/local/src/courier-authlib-0.66.2]# ./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=postfix
[root@localhost /usr/local/src/courier-authlib-0.66.2]# make && makeinstall

編譯過程當中發生了一個錯誤：

configure: error: The Courier Unicode Library 1.2 appears not to be installed. You may need to install a separate development subpackage, in addition to the main package

這是由於Courier Unicode Library沒有安裝，咱們下載courier-unicode-1.2並編譯安裝：

[root@localhost ~]# wget https://sourceforge.net/projects/courier/files/courier-unicode/1.2/courier-unicode-1.2.tar.bz2
[root@localhost ~]# tar jxvf courier-unicode-1.2.tar.bz2 
[root@localhost ~]# cd courier-unicode-1.2
[root@localhost courier-unicode-1.2]# ./configure
[root@localhost courier-unicode-1.2]# make && make install

完成Courier Unicode Library的安裝後，倒回去再次編譯courier-authlib就沒問題了

配置courier-authlib：

[root@localhost  courier-authlib-0.66.2]# chmod 755 /usr/local/courier-authlib/var/spool/authdaemon
[root@localhost  courier-authlib-0.66.2]# cp /etc/authdaemonrc.dist  /etc/authdaemonrc
[root@localhost  courier-authlib-0.66.2]# cp /etc/authmysqlrc.dist  /etc/authmysqlrc
[root@localhost  courier-authlib-0.66.2]# vim /etc/authdaemonrc      //配置文件裏的驗證方法比較多，咱們這裏只使用authmysql
authmodulelist="authmysql"
authmodulelistorig="authmysql"
[root@localhost  courier-authlib-0.66.2]# vim /etc/authmysqlrc     //直接添加到配置文件尾部，而後去上面將響應系統默認的注視掉，或者刪除便可
MYSQL_SERVER            localhost
MYSQL_USERNAME          extmail
MYSQL_PASSWORD          extmail
MYSQL_SOCKET            /var/lib/mysql/mysql.sock
MYSQL_PORT               3306
MYSQL_DATABASE          extmail
MYSQL_USER_TABLE        mailbox
MYSQL_CRYPT_PWFIELD     password
DEFAULT_DOMAIN          test.com
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)

courier-authlib添加服務啓動腳本及其餘：

[root@localhost  courier-authlib-0.66.2]# cp courier-authlib.sysvinit /etc/init.d/courier-authlib
[root@localhost  courier-authlib-0.66.2]# chmod +x /etc/init.d/courier-authlib
[root@localhost  courier-authlib-0.66.2]# chkconfig --add courier-authlib
[root@localhost  courier-authlib-0.66.2]# chkconfig courier-authlib on
[root@localhost  courier-authlib-0.66.2]# echo "/usr/local/courier-authlib/lib/courier-authlib" >> /etc/ld.so.conf.d/courier-authlib.conf
[root@localhost  courier-authlib-0.66.1]# ldconfig
[root@localhost  courier-authlib-0.66.1]# service courier-authlib start
Starting Courier authentication services: authdaemond

smtp以及虛擬用戶相關的設置：

[root@localhost ~]# vim /usr/lib64/sasl2/smtpd.conf    //文件不存在，要本身建立
pwcheck_method: authdaemond
log_level: 3
mech_list: PLAIN LOGIN
authdaemond_path:/usr/local/courier-authlib/var/spool/authdaemon/socket
[root@localhost ~]# vim /etc/postfix/main.cf
##postfix支持SMTP##
smtpd_sasl_auth_enable = yes
smtpd_sasl_local_domain = ''
smtpd_recipient_restrictions = permit_mynetworks,permit_sasl_authenticated,reject_unauth_destination
broken_sasl_auth_clients=yes
smtpd_client_restrictions = permit_sasl_authenticated
smtpd_sasl_security_options = noanonymous
##postfix支持虛擬用戶##
virtual_mailbox_base = /var/mailbox
virtual_mailbox_maps = mysql:/etc/postfix/mysql_virtual_mailbox_maps.cf   //這裏的配置文件需在後面extman
裏複製過來
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

安裝extmail

下載extmail和extman：

[root@localhost ~]# cd /usr/local/src/
[root@localhost /usr/local/src]# wget http://7xivyw.com1.z0.glb.clouddn.com/extmail-1.2.tar.gz
[root@localhost /usr/local/src]# wget http://7xivyw.com1.z0.glb.clouddn.com/extman-1.1.tar.gz

建立站點目錄並解壓、重命名extmail包：

[root@localhost /usr/local/src]# mkdir -p /var/www/extsuite
[root@localhost /usr/local/src]# tar -zxvf extmail-1.2.tar.gz -C /var/www/extsuite/
[root@localhost /usr/local/src]# mv /var/www/extsuite/extmail-1.2/ /var/www/extsuite/extmail

更改extmail的配置文件：

[root@localhost ~]# cd /var/www/extsuite/extmail
[root@localhost extmail]# cp webmail.cf.default webmail.cf
[root@localhost extmail]# vim webmail.cf
SYS_SESS_DIR = /tmp/extmail
SYS_UPLOAD_TMPDIR = /tmp/extmail/upload
SYS_USER_LANG = zh_CN
SYS_MIN_PASS_LEN = 8
SYS_MAILDIR_BASE = /var/mailbox
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_AUTHLIB_SOCKET = /usr/local/courier-authlib/var/spool/authdaemon/socket

創建臨時文件目錄與session目錄，並更改權限：

[root@localhost extmail]# mkdir -p /tmp/extmail/upload
[root@localhost extmail]# chown -R postfix.postfix /tmp/extmail/

安裝extman

回到extman的下載目錄下，解壓extman包：

[root@localhost ~]# cd /usr/local/src/
[root@localhost /usr/local/src]# tar -zxvf extman-1.1.tar.gz -C /var/www/extsuite/
[root@localhost /usr/local/src]# cd /var/www/extsuite/
[root@localhost /var/www/extsuite]# mv extman-1.1/ extman

拷貝extman的配置文件：

[root@localhost /var/www/extsuite]# cd extman/
[root@localhost /var/www/extsuite/extman]# cp webman.cf.default webman.cf

更改cgi目錄的屬主屬組：

[root@localhost /var/www/extsuite/extman]# chown -R postfix.postfix /var/www/extsuite/extman/cgi/
[root@localhost /var/www/extsuite/extman]# chown -R postfix.postfix /var/www/extsuite/extmail/cgi/

導入數據庫：
因爲數據庫不能識別TYPE=MyISAM，因此這裏直接導入會出錯，須要先編輯extmail.sql數據庫文件，將文件中的TYPE=MyISAM更改成ENGINE=MyISAM，共有五處修改：

[root@localhost /var/www/extsuite/extman]# vim docs/extmail.sql
:% s/TYPE/ENGINE/g

我這裏導入數據的時候發生了一個錯誤，提示找不到mysql.sock文件：

[root@localhost /var/www/extsuite/extman]# mysql -uroot < docs/extmail.sql
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)
[root@localhost /var/www/extsuite/extman]# ls /var/lib/mysql/mysql.sock
ls: 沒法訪問/var/lib/mysql/mysql.sock: 沒有那個文件或目錄

解決：而後我去查看了一下/etc/my.cnf文件，發現沒問題，socket參數指向的也是 /var/lib/mysql/mysql.sock 這個路徑，因而我就重啓了mysql服務，而後再嘗試就沒有報找不到mysql.sock文件的錯誤了，可是報了另外一個錯誤：

[root@localhost /var/www/extsuite/extman]# mysql -uroot < docs/extmail.sql
ERROR 1364 (HY000) at line 31: Field 'ssl_cipher' doesn't have a default value
[root@localhost /var/www/extsuite/extman]#

這錯誤的意思是：字段 'ssl密碼' 沒有默認值

因而又得去查看一下/etc/my.cnf文件，而後把sql_mode參數給註釋掉：

接着重啓mysql服務後，繼續導入數據，此次就沒問題了：

[root@localhost /var/www/extsuite/extman]# !service
service mysqld restart
Redirecting to /bin/systemctl restart  mysqld.service
[root@localhost /var/www/extsuite/extman]# mysql -uroot < docs/extmail.sql
[root@localhost /var/www/extsuite/extman]# mysql -uroot < docs/init.sql

導入數據成功後再次修改/etc/my.cnf文件，把剛剛註釋的那行給去掉註釋，不去掉的話，mysql服務可能會出現不能啓動的問題：

數據導入成功後，登陸mysql，建立一個mysql數據庫用戶extmail並授予權限：

[root@localhost /var/www/extsuite/extman]# mysql -uroot
mysql> GRANT ALL ON extmail.* to extmail@'%' identified by 'extmail';      //我這裏是直接授予所有權限在任意的IP地址上了，實際狀況根據需求而定
Query OK, 0 rows affected (0.00 sec)

mysql> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.00 sec)

mysql>

複製以前提到的配置文件：

[root@localhost ~]# cd /var/www/extsuite/extman/docs/
[root@localhost /var/www/extsuite/extman/docs]# cp mysql_virtual_* /etc/postfix/

爲extman建立臨時目錄：

[root@localhost /var/www/extsuite/extman/docs]# mkdir /tmp/extman
[root@localhost /var/www/extsuite/extman/docs]# chown -R postfix.postfix /tmp/extman/

啓動postfix、dovecot、saslauthd服務，並查看進程是否正常：

[root@localhost /var/www/extsuite/extman]# service postfix start
Starting postfix (via systemctl):                          [  肯定  ]
[root@localhost /var/www/extsuite/extman]# ps aux |grep postfix
root      63586  0.0  0.1  95392  2160 ?        Ss   01:29   0:00 /usr/libexec/postfix/master -w
postfix   63587  0.0  0.2  95448  3808 ?        S    01:29   0:00 pickup -l -t unix -u
postfix   63588  0.0  0.2  95496  3816 ?        S    01:29   0:00 qmgr -l -t unix -u
root      63592  0.0  0.0 112680   976 pts/0    S+   01:33   0:00 grep --color=auto postfix
[root@localhost /var/www/extsuite/extman]#  ss -tnluo | grep :25
tcp    LISTEN     0      100       *:25                    *:*             
[root@localhost /var/www/extsuite/extman]# service dovecot start
Redirecting to /bin/systemctl start  dovecot.service
[root@localhost /var/www/extsuite/extman]# ps aux |grep dovecot
root      63834  0.3  0.0  15652  1484 ?        Ss   02:15   0:00 /usr/sbin/dovecot -F
dovecot   63837  0.0  0.0   9320  1012 ?        S    02:15   0:00 dovecot/anvil
root      63838  0.0  0.0   9448  1164 ?        S    02:15   0:00 dovecot/log
root      63840  0.0  0.1  12464  2196 ?        S    02:15   0:00 dovecot/config
root      63842  0.0  0.0 112680   972 pts/0    S+   02:15   0:00 grep --color=auto dovecot    
[root@localhost /var/www/extsuite/extman]# systemctl start saslauthd
[root@localhost /var/www/extsuite/extman]# ps aux |grep saslauthd
root      63131  0.0  0.0  69648   916 ?        Ss   01:19   0:00 /usr/sbin/saslauthd -m /run/saslauthd -a pam
root      63132  0.0  0.0  69648   676 ?        S    01:19   0:00 /usr/sbin/saslauthd -m /run/saslauthd -a pam
root      63133  0.0  0.0  69648   676 ?        S    01:19   0:00 /usr/sbin/saslauthd -m /run/saslauthd -a pam
root      63134  0.0  0.0  69648   676 ?        S    01:19   0:00 /usr/sbin/saslauthd -m /run/saslauthd -a pam
root      63135  0.0  0.0  69648   676 ?        S    01:19   0:00 /usr/sbin/saslauthd -m /run/saslauthd -a pam
root      63144  0.0  0.0 112680   972 pts/0    S+   01:20   0:00 grep --color=auto saslauthd
[root@localhost /var/www/extsuite/extman]# ps aux |grep courier-authlib
root      61661  0.0  0.0   4316   444 ?        S    00:07   0:00 /usr/local/courier-authlib/sbin/courierlogger -pid=/usr/local/courier-authlib/var/spool/authdaemon/pid -start /usr/local/courier-authlib/libexec/courier-authlib/authdaemond
root      61662  0.0  0.0  35512  1796 ?        S    00:07   0:00 /usr/local/courier-authlib/libexec/courier-authlib/authdaemond
root      61663  0.0  0.0  35512   468 ?        S    00:07   0:00 /usr/local/courier-authlib/libexec/courier-authlib/authdaemond
root      61664  0.0  0.0  35512   468 ?        S    00:07   0:00 /usr/local/courier-authlib/libexec/courier-authlib/authdaemond
root      61665  0.0  0.0  35512   468 ?        S    00:07   0:00 /usr/local/courier-authlib/libexec/courier-authlib/authdaemond
root      61666  0.0  0.0  35512   468 ?        S    00:07   0:00 /usr/local/courier-authlib/libexec/courier-authlib/authdaemond
root      61667  0.0  0.0  35512   468 ?        S    00:07   0:00 /usr/local/courier-authlib/libexec/courier-authlib/authdaemond
root      63660  0.0  0.0 112680   980 pts/0    S+   02:00   0:00 grep --color=auto courier-authlib

7. 測試

測試虛擬用戶：

[root@localhost courier-authlib-0.66.2]# /usr/local/courier-authlib/sbin/authtest -s login postmaster@extmail.org extmail
Authentication succeeded.                //顯示這個表示成功，測試時使用的是postmaster@extmail.org，由於咱們導入的數據庫init.sql裏面自帶了這個。
Authenticated: postmaster@extmail.org  (uid 2525, gid 2525)
Home Directory: /var/mailbox/extmail.org/postmaster  //這裏須要注意/var/mailbox這個目錄如今咱們尚未建立，後面web訪問的時候若是沒有會報錯,因此提早建立。
                    Maildir: /var/mailbox/extmail.org/postmaster/Maildir/
                    Quota: (none)
            Encrypted Password: $1$phz1mRrj$3ok6BjeaoJYWDBsEPZb5C0
                Cleartext Password: extmail
                    Options: (none)
[root@localhost courier-authlib-0.66.2]# mkdir /var/mailbox
[root@localhost courier-authlib-0.66.2]# chown -R postfix.postfix /var/mailbox/

測試smtp發信：

[root@localhost ~]# printf   "postmaster@extmail.org" | openssl base64
cG9zdG1hc3RlckBleHRtYWlsLm9yZw==
[root@localhost ~]#  printf   "extmail" | openssl base64
ZXh0bWFpbA==
[root@localhost ~]# telnet localhost 25
Trying ::1...
telnet: connect to address ::1: Connection refused
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
220 mail.daen.com ESMTP Postfix
auth login
334 VXNlcm5hbWU6
cG9zdG1hc3RlckBleHRtYWlsLm9yZw==
334 UGFzc3dvcmQ6
ZXh0bWFpbA==
235 2.7.0 Authentication successful     //成功
quit
221 2.0.0 Bye
Connection closed by foreign host.

8. 啓動nginx實現web訪問

nginx自己並不能解析cgi，extmail自帶了解析cgi的程序，可是有些地方須要修改下：

[root@localhost ~]# vim /var/www/extsuite/extmail/dispatch-init
SU_UID=postfix
SU_GID=postfix

啓動dispatch-init：

[root@localhost ~]# /var/www/extsuite/extmail/dispatch-init start
Starting extmail FCGI server...
[root@localhost ~]# /var/www/extsuite/extman/daemon/cmdserver -v -d 
loaded ok

添加nginx虛擬主機：

vim /etc/nginx/conf.d/extmail.conf

文件內容以下：

server {
   listen       8080;
   server_name  mail.everyoo.com;
   index index.html index.htm index.php index.cgi;
   root  /var/www/extsuite/extmail/html/;
   location /extmail/cgi/ {
             fastcgi_pass          127.0.0.1:8888;
             fastcgi_index         index.cgi;
             fastcgi_param  SCRIPT_FILENAME   /var/www/extsuite/extmail/cgi/$fastcgi_script_name;
             include               fcgi.conf;
        }
        location  /extmail/  {
             alias  /var/www/extsuite/extmail/html/;
        }
        location /extman/cgi/ {
             fastcgi_pass          127.0.0.1:8888;
             fastcgi_index         index.cgi;
             fastcgi_param  SCRIPT_FILENAME   /var/www/extsuite/extman/cgi/$fastcgi_script_name;
             include            fcgi.conf;
        }
        location /extman/ {
             alias  /var/www/extsuite/extman/html/;
        }
      access_log  /var/log/extmail_access.log;
}

建立fcgi.conf文件：

vim /etc/nginx/fcgi.conf

文件內容以下：

fastcgi_param  GATEWAY_INTERFACE  CGI/1.1;
fastcgi_param  SERVER_SOFTWARE    nginx;
fastcgi_param  QUERY_STRING       $query_string;
fastcgi_param  REQUEST_METHOD     $request_method;
fastcgi_param  CONTENT_TYPE       $content_type;
fastcgi_param  CONTENT_LENGTH     $content_length;
fastcgi_param  SCRIPT_NAME        $fastcgi_script_name;
fastcgi_param  REQUEST_URI        $request_uri;
fastcgi_param  DOCUMENT_ROOT      $document_root;
fastcgi_param  SERVER_PROTOCOL    $server_protocol;
fastcgi_param  REMOTE_ADDR        $remote_addr;
fastcgi_param  REMOTE_PORT        $remote_port;
fastcgi_param  SERVER_ADDR        $server_addr;
fastcgi_param  SERVER_PORT        $server_port;
fastcgi_param  SERVER_NAME        $server_name;

安裝Unix::Syslog：

[root@localhost ~]# cd /usr/local/src/
[root@localhost /usr/local/src]# wget http://www.cpan.org/authors/id/M/MH/MHARNISCH/Unix-Syslog-1.1.tar.gz
[root@localhost /usr/local/src]# tar zxvf Unix-Syslog-1.1.tar.gz 
[root@localhost /usr/local/src]# cd Unix-Syslog-1.1
[root@localhost /usr/local/src/Unix-Syslog-1.1]# perl Makefile.PL
[root@localhost /usr/local/src/Unix-Syslog-1.1]# make && make install

啓動nginx，並檢查進程和監聽端口是否正常：

[root@localhost ~]# service nginx start
Redirecting to /bin/systemctl start  nginx.service
[root@localhost ~]# ps aux |grep nginx
root      72338  0.0  0.1 122892  2296 ?        Ss   03:22   0:00 nginx: master process /usr/sbin/nginx
nginx     72339  0.0  0.1 123336  3192 ?        S    03:22   0:00 nginx: worker process
nginx     72340  0.0  0.1 123336  3192 ?        S    03:22   0:00 nginx: worker process
nginx     72341  0.0  0.1 123336  3192 ?        S    03:22   0:00 nginx: worker process
nginx     72342  0.0  0.1 123336  3192 ?        S    03:22   0:00 nginx: worker process
root      72344  0.0  0.0 112680   976 pts/0    S+   03:22   0:00 grep --color=auto nginx
[root@localhost ~]# netstat -lntp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name    
tcp        0      0 0.0.0.0:110             0.0.0.0:*               LISTEN      63834/dovecot       
tcp        0      0 0.0.0.0:143             0.0.0.0:*               LISTEN      63834/dovecot       
tcp        0      0 0.0.0.0:80              0.0.0.0:*               LISTEN      72338/nginx: master 
tcp        0      0 0.0.0.0:8080            0.0.0.0:*               LISTEN      72338/nginx: master 
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      1482/sshd           
tcp        0      0 127.0.0.1:8888          0.0.0.0:*               LISTEN      64100/dispatch.fcgi 
tcp        0      0 0.0.0.0:25              0.0.0.0:*               LISTEN      64328/master        
tcp6       0      0 :::3306                 :::*                    LISTEN      62442/mysqld        
tcp6       0      0 :::80                   :::*                    LISTEN      72338/nginx: master 
tcp6       0      0 :::22                   :::*                    LISTEN      1482/sshd           
[root@localhost ~]#

而後到windows上訪問你服務器IP的8080端口：

extman的登陸帳戶爲root@extmail.org密碼爲extmail*123*，首次使用須要先添加域，添加以後再修改域，改成可自由註冊，再註冊用戶就能夠登陸發郵件了：