Centos6.5 用postfix和dovecot_sasl搭建邮件服务器

平台centos6.5 x86_64最小化安装

 

一，系统设置

1，echo 'yourserverIP localhost' > /etc/hosts

2，sed -i 's/HOSTNAME=*/HOSTNAME=hostname.yourdomain.com/g' /etc/sysconfig/network

3，添加你域名的A记录（hostname.yourdomain.com A 默认 12.12.12.12）和MX记录（@ MX  默认 hostname.yourdomain.com），命令host -t mx yourdomain.com确认MX记录生效

4，修改时区 cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime

      clock -w #同步BIOS时间

 

二，安装postfix

yum update -y

rpm -q postfix dovecot sendmail      dovecot和sendmail默认没有安装

yum install -y dovecot

vi /etc/postfix/main.cf

myhostname = mail.yourdomain.com   指email服务器的域名

mydomain = yourdomain.com   指系统的主机名称

myorigin = $mydomain     指定本地发送邮件中来源和传递显示的域名

inet_interfaces = all    设置网络接口以便Postfix能接收到邮件

mynetworks = 127.0.0.0/8    指定受信任SMTP的列表

mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain

relay_domains = $mydestination   系统传递邮件的目的域名列表

home_mailbox = Maildir/    设置邮箱路径与用户目录

添加如下设置启用sasl

smtpd_sasl_type = dovecot      启用dovecot-sasl认证

smtpd_sasl_path = private/auth

smtpd_sasl_auth_enable = yes   启用sasl受权

smtpd_sasl_local_domain = $myhostname    sasl的本地域

smtpd_sasl_security_options = noanonymous  不容许匿名登陆

broken_sasl_auth_clients = yes    客户端兼容支持

smtpd_recipient_restrictions =permit_mynetworks,permit_sasl_authenticated,reject_unauth_destination

smtpd_client_restrictions = permit_sasl_authenticated

message_size_limit = 102400000

mailbox_size_limit = 204800000

 

chkconfig postfix on

service postfix restart

 

查看具体有效配置项参数

postconf -n

 

测试一

yum install -y mailx

mail -s 'hello' 12345667@qq.com < /etc/hosts

测试二

yum install -y telnet

telnet localhost 25

Trying ::1...

Connected to localhost.

Escape character is '^]'.

220 mail.yourdomain.com ESMTP Postfix

输入ehlo yourserverIP

退出quit

 

三，配置dovecot

 

1，vi /etc/dovecot/dovecot.conf  支持pop3和imap协议

protocols = imap pop3 lmtp

listen = *

 

2，vi /etc/dovecot/conf.d/10-auth.conf  指明建立的Unix socket使用的权限，以及用户和组属性

disable_plaintext_auth = no            容许密码明文认证

auth_mechanisms = plain login

 

3，vi /etc/dovecot/conf.d/10-mail.conf  设置邮箱文件存放位置

mail_location = maildir:~/Maildir

 

4，vi /etc/dovecot/conf.d/10-master.conf  设置dovecot-sasl认证

# commented on these line:

#unix_listener auth-userdb {

    #mode = 0600

    #user =

    #group =

  #}

 

# change or setup on these line:

# Postfix smtp-auth

  unix_listener /var/spool/postfix/private/auth {

    mode = 0666

    user = postfix

    group = postfix

  }

 

5，vi /etc/dovecot/conf.d/10-ssl.conf    关闭ssl加密（这里为了便于测试）

修改成ssl = no

 

6，vi /etc/dovecot/conf.d/20-pop3.conf

# uncomment on these line:

pop3_uidl_format = %08Xu%08Xv

pop3_client_workarounds = outlook-no-nuls oe-ns-eoh

 

 

chkconfig dovecot on

service dovecot start

 

查看具体有效配置项参数

dovecot -n

 

telnet localhost 110

Trying ::1...

telnet: connect to address ::1: Connection refused

Trying 127.0.0.1...

Connected to localhost.

Escape character is '^]'.

+OK Dovecot ready.  服务已ok

quit 退出

+OK Logging out

Connection closed by foreign host.

 

四，建立帐户

Postfix默认用系统用户做为邮件帐号，须要添加Linux系统用户帐号相互收发邮件测试

groupadd mailusers

adduser -g mailusers -s /sbin/nologin test

passwd test

mkdir -p /home/test/Maildir

chown test:mailusers /home/test/Maildir

chmod -R 700 /home/test/Maildir

 

下载Foxmail测试该帐号收发邮件

http://www.linuxde.net/2013/07/14774.html

也能够安装webmail（就是squirrelmail 界面较老 基本能用）

wget https://nchc.dl.sourceforge.net/project/squirrelmail/stable/1.4.22/squirrelmail-webmail-1.4.22.tar.gz

tar zxvf squirrelmail-webmail-1.4.22.tar.gz

mv squirrelmail-webmail-1.4.22 webmail

cd webmail/

config/conf.pl (./configure)

选1. Organization Preferences -->6.  Default Language  : en_US 改为zh_CN

2.  Server Settings  -->1.  Domain  : mydomain.com　改为本身的域名 -->A.  Update IMAP Settings  : localhost:143 (cyrus)改为(courier)

4. General Options  -->1.Data Directory : 改成/var/www/html/webmail/data/  -->2.Attachment Directory :改成/var/www/html/webmail/attach/

10.language preferences -->1.Default Language :改成zh_CN  -->2.Default Charset :改成UTF-8

最好s保存q退出

下载中文语言包：
https://nchc.dl.sourceforge.net/project/squirrelmail/locales/1.4.18-20090526/all_locales-1.4.18-20090526.tar.gz

将其解压到WebMail

修改邮件存放目录权限
chown -R nginx:nginx /var/www/html/webmail/data/

在nginx配置文件中server{}段添加以下两段

    location /webmail {
        root /var/www/html/;
        fastcgi_buffer_size 128k;
        fastcgi_buffers 256 4k;
        fastcgi_busy_buffers_size 256k;
        fastcgi_temp_file_write_size 256k;
        fastcgi_intercept_errors on;
   }

   location ~ /webmail/.*\.php$ {
        fastcgi_pass  127.0.0.1:9000;
        fastcgi_index    index.php;
        fastcgi_param    SCRIPT_FILENAME   /var/www/$uri;
        include         fastcgi_params;
   }

service nginx restart

而后http://SERVERIP/webmail就能用创建的系统帐号收发邮件了。