【说在前面的话】

自己做实验，为减少麻烦，关闭防火墙和SElinux

在搭建邮箱服务器之前，要完成DNS服务和apache,请看我另外两篇博客，附链接

DNS:        https://blog.csdn.net/ljh_laura_li/article/details/80709060

apache:    https://blog.csdn.net/ljh_laura_li/article/details/80709570

启动named和httpd服务

#service named start

#service httpd start

首先，创建两个用户，进行收发

#useradd abc        #passwd abc

#useradd ab        #passwd ab

安装openwebmail

#cd /etc/yum.repos.d

# wget -q http://openwebmail.org/openwebmail/download/redhat/rpm/release/openwebmail.repo

#yum -y install openwebmail

可能会失败，要多装几次

安装dovecot

#yum -y install dovecot

修改/etc/dovecot/dovecot.conf配置文件

#vim /etc/dovecot/dovecot.conf

#service dovecot restart

安装cyrus-sasl

# yum -y install cyrus-sasl

# chkconfig  saslauthd on

修改 /etc/sysconfig/saslauthd

# vim /etc/sysconfig/saslauthd   

# service saslauthd  restart

安装postfix

#yum -y install postfix

修改/etc/postfix/main.cf

#vim /etc/postfix/main.cf

myhostname = mail.li.com

mydomain = li.com

myorigin = $mydomain

inet_interfaces = all

inet_protocols = all

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

mynetworks = 0.0.0.0/0

relay_domains = $mydestination

最后加上

smtpd_banner = $myhostname ESMTP $mail_name ($mail_version)        
default_process_limit = 50
default_destination_concurrency_limit = 20
smtpd_sasl_auth_enable = yes
smtpd_sasl_local_domain = $myhostname
smtpd_sasl_application_name = smtpd
broken_sasl_auth_clients = yes
smtpd_recipient_restrictions = permit_mynetworks,permit_sasl_authenticated,reject_unauth_destination

smtpd_client_restrictions = permit_sasl_authenticated

#service postfix restart

# chkconfig postfix on

修改/var/www/cgi-bin/openwebmail/etc/openwebmail.conf

#vim /var/www/cgi-bin/openwebmail/etc/openwebmail.conf

domainnames                     li.com

default_timeoffset              +0800

修改/var/www/cgi-bin/openwebmail/etc/defaults/openwebmail.conf

#vi /var/www/cgi-bin/openwebmail/etc/defaults/openwebmail.conf

domainnames             li

smtpserver                  192.168.3.33

authpop3_server         192.168.3.33

# cd /var/www/cgi-bin/openwebmail

# ./openwebmail-tool.pl --init

#service httpd restart

在浏览器中输入192.168.3.33/webmail

输入用户名密码，两个用户互相收发