Centos7搭建邮件服务器-Postfix+Cyrus-sasl+Courier-authlib+Dovecot+ExtMail+Centos7

1.环境介绍

MTA: Postfix 3.1.4

SASL: Cyrus-sasl 2.1.26 ; Courier-authlib 0.66.1（Cyrus-sasl使用Courier-authlib与MySQL建立关联）

MDA: Dovecot  2.2.10

DataBase: 5.5.52-MariaDB MariaDB Server

WebMail: ExtMail 1.2（普通用户界面）; ExtMan 1.1（管理员界面）

Web服务器（用于发布WebMail程序）: Apache 2.4.6

服务器操作系统版本：Centos7

2.安装前的一些准备工作

Courier-authlib  ：     http://www.courier-mta.org/download.html  ， 我这里下载的是最新的 courier-0.76.4.tar.bz2 。

postfix　　: ftp://ftp.cuhk.edu.hk/pub/packages/mail-server/postfix/index.html ， 我这里下载的是最新版本的

2.1 安装开发环境

yum groups install "Compatibility Libraries" "Development Tools" "Development and Creative Workstation" -y # 安装必要的开发环境

2.2 安装安装所需的rpm包

yum install httpd, mariadb-server,mariadb, mariadb-devel, openssl-devel, dovecot, perl-DBD-MySQL, tcl, tcl-devel, libart_lgpl, libart_lgpl-devel, libtool-ltdl, libtool-ltdl-devel, expect -y

2.3卸载系统默认的postfix

yum remove postfix #卸载postfix 

３配置dns服务器

 3.1 安装bind

yum install bind bind-libs bind-devel -y 

 3.2 编辑/etc/named.conf

注释一下几行
//	listen-on port 53 { 127.0.0.1; };
//	listen-on-v6 port 53 { ::1; };
//	allow-query     { localhost; };

3.3 编辑 /etc/named.rfc1912.zones

最后添加如下几行
zone "linuxpanda.com" IN {
	type master;
	file "linuxpanda.com.zone";
};
zone "137.168.192.in-addr.arpa" IN {
	type master;
	file "192.168.137.zone";
};

3.4 新增区域文件

vim /var/named/192.168.137.zone
内容为
$TTL 1D
@	IN SOA	ns.linuxpanda.com. admin.linuxpanda.com. (
					20170201	; serial
					2H	; refresh
					1H	; retry
					1W	; expire
					3H )	; minimum
	IN	NS		 ns.linuxpanda.com.
200	IN	PTR	ns.linuxpanda.com.
200	IN	PTR	mail.linuxpanda.com.
200	IN 	PTR	www.linuxpanda.com.
200	IN	PTR	win.linuxpanda.com.

vim /var/named/linuxpanda.com.zone
内容为
$TTL 1D
@	IN SOA	ns.linuxpanda.com. admin.linuxpanda.com. (
					20170201	; serial
					2H	; refresh
					1H	; retry
					1W	; expire
					3H )	; minimum
	IN	NS		 ns
	IN	MX	 10	 mail

ns	IN	A	192.168.137.101
mail	IN	A	192.168.137.101	
www	IN	A	192.168.137.101

3.5 修改文件权限

#chown root.named 192.196.137.zone #修改文件属主和属组
#chown root.named linuxpanda.com.zone #修改文件属主和属组
#chmod 640  192.196.137.zone #修改文件权限
#chmod 640  linuxpanda.com.zone #修改文件权限

3.6启动named服务并测试

# netstat -tunlp  #查看端口信息
# systemctl restart named #重新启动named服务
# systemctl enable named  #加入chkconfg中去

[root@mail named]# dig -t A mail.linuxpanda.com @192.168.137.101 #测试正向

; <<>> DiG 9.9.4-RedHat-9.9.4-37.el7 <<>> -t A mail.linuxpanda.com @192.168.137.101
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 65454
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 2

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;mail.linuxpanda.com.		IN	A

;; ANSWER SECTION:
mail.linuxpanda.com.	86400	IN	A	192.168.137.101

;; AUTHORITY SECTION:
linuxpanda.com.		86400	IN	NS	ns.linuxpanda.com.

;; ADDITIONAL SECTION:
ns.linuxpanda.com.	86400	IN	A	192.168.137.101

;; Query time: 1 msec
;; SERVER: 192.168.137.101#53(192.168.137.101)
;; WHEN: Fri Feb 10 07:50:27 CST 2017
;; MSG SIZE  rcvd: 97

[root@mail named]# dig -t A mail.linuxpanda.com  #测试反向

; <<>> DiG 9.9.4-RedHat-9.9.4-37.el7 <<>> -t A mail.linuxpanda.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 40123
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 2

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;mail.linuxpanda.com.		IN	A

;; ANSWER SECTION:
mail.linuxpanda.com.	86400	IN	A	192.168.137.101

;; AUTHORITY SECTION:
linuxpanda.com.		86400	IN	NS	ns.linuxpanda.com.

;; ADDITIONAL SECTION:
ns.linuxpanda.com.	86400	IN	A	192.168.137.101

;; Query time: 0 msec
;; SERVER: 192.168.137.101#53(192.168.137.101)
;; WHEN: Fri Feb 10 07:50:58 CST 2017
;; MSG SIZE  rcvd: 97

4.编译安装postfix

4.1 删除postfix的文件和用户

# find / -user postfix #找到的文件都删除了
# userdel postfix

4.2创建postfix、postdrop用户组和用户

# 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

4.2开始编译安装

# tar zxvf postfix-3.1.4.tar.gz
# cd postfix-3.1.4
# 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 -lm -L/usr/lib64/sasl2 -lsasl2  -lssl -lcrypto'
# make
# make install

4.3 postfix的一些基础配置设置。一路回车就可以了。

install_root: [/] 
tempdir: [/root/Downloads/postfix-3.1.4] 
config_directory: [/etc/postfix] 
command_directory: [/usr/sbin] 
daemon_directory: [/usr/libexec/postfix] 
data_directory: [/var/lib/postfix] 
html_directory: [no] 
mail_owner: [postfix] 
mailq_path: [/usr/bin/mailq] 
manpage_directory: [/usr/local/man] 
newaliases_path: [/usr/bin/newaliases] 
queue_directory: [/var/spool/postfix] 
readme_directory: [no] 
sendmail_path: [/usr/sbin/sendmail] 
setgid_group: [postdrop] 
shlib_directory: [no] 
meta_directory: [/etc/postfix] 

注意： 这些路径都是要确认本地存在的。可以使用rpm -ql 命令获取rpm包的信息。

4.4 生成别名二进制文件

# newalias

4.5 修改post主配置文件

# vim /etc/postfix/main.cf
修改以下几项为您需要的配置
myhostname = mail.linuxpanda.com
myorigin = linuxpanda.com
mydomain = linuxpanda.com
mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain
mynetworks = 192.168.137.0/24, 127.0.0.0/8

4.6 为postfix提供sysv服务脚本/etc/rc.d/init.d/postfix

# vim /etc/rc.d/init.d/postfix
#!/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 $?

# END

4.7 给脚本授权并加入到服务列表中去

# chmod +x /etc/rc.d/init.d/postfix
# chkconfig --add postfix
# chkconfig postfix on
# service postfix restart

注意： 如果服务无法启动，请使用postconf检查postfix的配置错误信息。

 5.测试postfix

5.1 使用telnet 命令发邮件

[root@mail Downloads]# telnet mail.linuxpanda.com 25
Trying 192.168.137.101...
Connected to mail.linuxpanda.com.
Escape character is '^]'.
220 mail.linuxpanda.com ESMTP Postfix
HELO mail.linuxpanda.com
250 mail.linuxpanda.com
mail from:root
250 2.1.0 Ok
rcpt to:oracle
250 2.1.5 Ok
data
354 End data with <CR><LF>.<CR><LF>
hello oracle ,i'm root .
.
250 2.0.0 Ok: queued as 1C5D3399AAF
quit
221 2.0.0 Bye
Connection closed by foreign host.

5.2查看日志

# tail /var/log/maillog
Feb 10 21:57:31 mail postfix/trivial-rewrite[35445]: warning: smtputf8_enable is true, but EAI support is not compiled in
Feb 10 21:59:08 mail postfix/cleanup[35574]: warning: smtputf8_enable is true, but EAI support is not compiled in
Feb 10 21:59:08 mail postfix/smtpd[35443]: 1C5D3399AAF: client=mail.linuxpanda.com[192.168.137.101]
Feb 10 21:59:40 mail postfix/cleanup[35574]: 1C5D3399AAF: message-id=<20170210135908.1C5D3399AAF@mail.linuxpanda.com>
Feb 10 21:59:40 mail postfix/qmgr[34499]: 1C5D3399AAF: from=<root@linuxpanda.com>, size=352, nrcpt=1 (queue active)
Feb 10 21:59:40 mail postfix/local[35583]: warning: smtputf8_enable is true, but EAI support is not compiled in
Feb 10 21:59:40 mail postfix/local[35583]: warning: dict_nis_init: NIS domain name not set - NIS lookups disabled
Feb 10 21:59:40 mail postfix/local[35583]: 1C5D3399AAF: to=<oracle@linuxpanda.com>, orig_to=<oracle>, relay=local, delay=129, delays=129/0.05/0/0, dsn=2.0.0, status=sent (delivered to mailbox)
Feb 10 21:59:40 mail postfix/qmgr[34499]: 1C5D3399AAF: removed
Feb 10 21:59:43 mail postfix/smtpd[35443]: disconnect from mail.linuxpanda.com[192.168.137.101] helo=1 mail=1 rcpt=1 data=1 quit=1 commands=5

5.3登录到oracle用户可以查收邮件的。

 su - oracle
[oracle@mail ~]$ mail
Heirloom Mail version 12.5 7/5/10.  Type ? for help.
"/var/spool/mail/oracle": 1 message 1 new
>N  1 root@linuxpanda.com   Fri Feb 10 21:59  13/489   
& 1
Message  1:
From root@linuxpanda.com  Fri Feb 10 21:59:40 2017
Return-Path: <root@linuxpanda.com>
X-Original-To: oracle
Delivered-To: oracle@linuxpanda.com
Date: Fri, 10 Feb 2017 21:57:31 +0800 (CST)
From: root@linuxpanda.com
Status: R

hello oracle ,i'm root .

6.为postfix服务开启用户别名支持

6.1在配置文件开启基于hash的别名文件支持

在main.cf中，找到如下指令，而后启用它(即移除前面的#号)：

#alias_maps = hash:/etc/aliases

6.2 添加别名

编辑/etc/alias添加zhaojiedi：    zhaojiedi1992行。格式说明，前一个字段为初始目标邮件地址，后一个字段为实际发往的地址。

 6.3、将/etc/aliases转换为hash格式：

# postalias  /etc/aliases

6.4 重新启动postfix

# service postfix restart

 6.5 测试发送给zhaojiedi 是否转发到zhaojiedi1992邮箱中去。（这里测试跳过）。

 7.为postfix开启基于cyrus-sasl的认证功能

7.1检查postfix是否支持了sasl功能

#postconf -a
cyrus
dovecot

7.2 编辑 /etc/postfix/main.cf 加入smtp认证设置信息

#vim /etc/postfix/main.cf
添加以下内容：
############################CYRUS-SASL############################
broken_sasl_auth_clients = yes
smtpd_recipient_restrictions=permit_mynetworks,permit_sasl_authenticated,reject_unauth_destination
smtpd_sasl_auth_enable = yes
smtpd_sasl_local_domain = $myhostname
smtpd_sasl_security_options = noanonymous
smtpd_sasl_path = smtpd
smtpd_banner = Welcome to our $myhostname ESMTP,Warning: Version not Available!

7.3 编辑 /usr/lib/sasl2/smtpd.conf

vim /usr/lib64/sasl2/smtpd.conf
添加如下内容：
pwcheck_method: saslauthd
mech_list: PLAIN LOGIN

7.4 重新加载postfix

#/usr/sbin/postfix reload

7.5 测试sasl配置正确性

!tel
telnet mail.linuxpanda.com 25
Trying 192.168.137.101...
Connected to mail.linuxpanda.com.
Escape character is '^]'.
220 Welcome to our mail.linuxpanda.com ESMTP,Warning: Version not Available!
helo mail.linuxpanda.com
250 mail.linuxpanda.com
ehlo mail.linuxpanda.com
250-mail.linuxpanda.com
250-PIPELINING
250-SIZE 10240000
250-VRFY
250-ETRN
250-AUTH PLAIN LOGIN
250-AUTH=PLAIN LOGIN
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN

注意： 确保你的信息有250-AUTH=PLAIN LOGIN和250-ENHANCEDSTATUSCODES 这两行

8 安装Courier authentication library

8.1 安装libtool

# wget http://ftpmirror.gnu.org/libtool/libtool-2.4.6.tar.gz
# tar zxvf libtool-2.4.6.tar.gz
# ./configure --prefix=/usr/local/libtool --enable-ltdl-install
# make
# make install

8.2 安装courier-unicode

下载 courier-unicode
#wget https://sourceforge.net/projects/courier/files/latest/download?source=files
# tar zxvf libtool-2.4.6.tar.gz
# ./configure 
# make
# make install

8.3开始安装courier-authlib

# tar jxvf ourier-authlib-0.67.0.tar.bz2
# cd courier-authlib-0.64.0
#./configure 
    --prefix=/usr/local/courier-authlib 
    --sysconfdir=/etc 
    --without-authpam 
    --without-authshadow 
    --without-authvchkpw 
    --without-authpgsql 
    --with-authmysql 
    --with-mysql-libs=/usr/lib/mysql 
    --with-mysql-includes=/usr/include/mysql 
    --with-redhat 
    --with-authmysqlrc=/etc/authmysqlrc 
    --with-authdaemonrc=/etc/authdaemonrc 
    --with-mailuser=postfix 
    --with-mailgroup=postfix 
    --with-ltdl-lib=/usr/local/libtool/lib 
    --with-ltdl-include=/usr/local/libtool/include 
    --with-authdaemonvar=/var/spool/authdaemon
# make
# make install

8.4 创建和复制和修改文件

# chmod 755 /usr/local/courier-authlib/var/spool/authdaemon
# cp /etc/authdaemonrc.dist  /etc/authdaemonrc
# cp /etc/authmysqlrc.dist  /etc/authmysqlrc

修改/etc/authdaemonrc 文件
authmodulelist="authmysql"
authmodulelistorig="authmysql"
daemons=12

8.5 配置其通过mysql进行邮件帐号认证

vim /etc/authmysqlrc 为以下内容，其中2525，2525 为postfix 用户的UID和GID。
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)

8.6提供SysV服务脚本

# cp courier-authlib.sysvinit /etc/rc.d/init.d/courier-authlib
# chmod 755 /etc/init.d/courier-authlib
# chkconfig --add courier-authlib
# chkconfig --level 2345 courier-authlib on
# service courier-authlib start   #启动服务

8.7创建/var/mailbox目录

#mkdir –pv /var/mailbox
#chown –R postfix /var/mailbox

8.8编辑 /usr/lib/sasl2/smtpd.conf

内容有如下几项
pwcheck_method: authdaemond
log_level: 3
mech_list:PLAIN LOGIN
authdaemond_path:/var/spool/authdaemon/socket

9 让postfix支持虚拟域和虚拟用户

9.1编辑/etc/postfix/main.cf

添加如下内容
########################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

 注意，启用了虚拟域，需要将需要取消中心域，即注释掉myhostname, mydestination, mydomain, myorigin几行。

9.2使用extman源码目录下docs目录中的extmail.sql和init.sql建立数据库：

# tar zxvf  extman-1.1.tar.gz
# cd extman-1.1/docs
# sed -i 's@TYPE=MyISAM@ENGINE=InnoDB@g' extmail.sql
# mysql -u root -p < extmail.sql
# mysql -u root -p <init.sql
# cp mysql*  /etc/postfix/

9.3授予用户extmail访问extmail数据库的权限

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';

10.配置dovecot

10.1编辑配置文件

# vi /etc/dovecot/conf.d/10-mail.conf        #设置email位置
mail_location = maildir:/var/mailbox/%d/%n/Maildir
# vim /etc/dovecot/conf.d/10-auth.conf       #选择认证方式（mysql认证）
注释掉#!include auth-system.conf.ext行，去掉#!include auth-sql.conf.ext行的注释
#vim /etc/dovecot/dovecot-sql.conf.ext       #配置认证sql语句       
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'

10.2 重启dovecot

# service dovecot start
# chkconfig dovecot on

11.安装配置extmail

11.1安装

# tar zxvf extmail-1.1.1.tar.gz
# mkdir -pv /var/www/extsuite
# mv extmail-1.1.1 /var/www/extsuite/extmail
# cp /var/www/extsuite/extmail/webmail.cf.default  /var/www/extsuite/extmail/webmail.cf

11.2配置extmail

#vi /var/www/extsuite/extmail/webmail.cf
SYS_MESSAGE_SIZE_LIMIT = 5242880
SYS_MAILDIR_BASE = /var/mailbox
SYS_MYSQL_USER = extmail
SYS_MYSQL_PASS = extmail
SYS_MYSQL_TABLE = mailbox
SYS_MYSQL_ATTR_USERNAME = username
SYS_MYSQL_ATTR_DOMAIN = domain
SYS_MYSQL_ATTR_PASSWD = password
SYS_AUTHLIB_SOCKET = /var/spool/authdaemon/socket
SYS_AUTHLIB_SOCKET =/var/spool/authdaemon/socket

12.apach 配置

12.1编辑/etc/httpd/config/httpd.conf文件

添加如下内容
<VirtualHost *:80>
ServerName mail.magedu.com
DocumentRoot /var/www/extsuite/extmail/html/
ScriptAlias /extmail/cgi /var/www/extsuite/extmail/cgi
Alias /extmail /var/www/extsuite/extmail/html
</VirtualHost>
注释DocumentRoot 行
修改
User postfix
Group postfix

12.2依赖关系的解决

# tar zxvf Unix-Syslog-0.100.tar.gz
# cd Unix-Syslog-0.100
# perl Makefile.PL
# makelinli
# make install

12.3启动apach服务

# service httpd start
# chkconfig httpd on

13安装Extman-1.1

13.1安装及基本配置

# tar zxvf  extman-1.1.tar.gz
# mv extman-1.1 /var/www/extsuite/extman
# cp /var/www/extsuite/extman/webman.cf.default  /var/www/extsuite/extman/webman.cf
# vi /var/www/extsuite/extman/webman.cf
修改内容为如下
SYS_MAILDIR_BASE = /var/mailbox
SYS_DEFAULT_UID = 2525
SYS_DEFAULT_GID = 2525
SYS_MYSQL_USER = extmail
SYS_MYSQL_PASS = extmail
SYS_CAPTCHA_ON = 0
而后修改cgi目录的属主：
# chown -R postfix.postfix /var/www/extsuite/extman/cgi/

13.2在apache的主配置文件中Extmail的虚拟主机部分，添加如下两行：

ScriptAlias /extman/cgi /var/www/extsuite/extman/cgi
Alias /extman /var/www/extsuite/extman/html
修改后虚拟主机部分的内容为
<VirtualHost *:80>
ServerName mail.linuxpanda.com
DocumentRoot /var/www/extsuite/extmail/html/
ScriptAlias /extmail/cgi /var/www/extsuite/extmail/cgi
Alias /extmail /var/www/extsuite/extmail/html
#SuexecUserGroup postfix postfix
ScriptAlias /extman/cgi /var/www/extsuite/extman/cgi
Alias /extman /var/www/extsuite/extman/html
</VirtualHost>

13.3 创建运行目录

创建其运行时所需的临时目录，并修改其相应的权限：
#mkdir  -pv  /var/www/tmp/extman
#chown postfix.postfix  /var/www/tmp/extman

13.4测试webmail配置如何

打开浏览器输入192.168.137.101/extman 就可以了。

extman默认管理帐号为：root@extmail.org  密码为：extmail*123*

注：如果在后台创建的用户无法调整，编辑/var/www/extsuite/extmail/libs/Ext/Logger/File.pm  注释第45行：printf $fh "$time $host extmail[$$]: $msg ", @_;

在浏览器192.168.137.101/extmail 页面注册2个用户， 测试邮件发送。