搭建邮件服务器实现域内域外互访_邮件 已读提醒 域内 域外

域内互访

[root@localhost ~]# dnf install mailx        为了可以使用mail命令，安装该软件包
[root@localhost ~]# yum install postfix            安装实现发送邮件的软件包

[root@localhost ~]# vim /etc/postfix/main.cf     编辑主配置文件
myhostname = mail.openlab.com
mydomain = openlab.com
myorigin = $mydomain
inet_interfaces = all
mydestination = $mydomain
mynetworks = 192.168.46.0/24

[root@localhost ~]# systemctl restart postfix      重启服务
[root@localhost ~]# yum install dovecot          安装邮件接受服务器包

[root@localhost ~]# vim /etc/dovecot/dovecot.conf    编辑主配置文件  
protocols = imap pop3 lmtp
login_trusted_networks = 192.168.46.0/24

[root@localhost ~]# vim /etc/dovecot/conf.d/10-mail.conf      编辑子配置文件
mail_location = mbox:~/mail:INBOX=/var/mail/%u

[root@localhost ~]# systemctl restart dovecot      重启服务
[root@localhost ~]# setenforce 0      关闭selinux防火墙
[root@localhost ~]# systemctl stop firewalld     关闭防火墙
[root@localhost ~]# useradd maomao      增添用户
[root@localhost ~]# echo redhat | passwd --stdin maomao       为用户设置密码
Changing password for user maomao.
passwd: all authentication tokens updated successfully.
[root@localhost ~]# echo redhat | passwd --stdin zhangsan
Changing password for user zhangsan.
passwd: all authentication tokens updated successfully.
[root@localhost ~]# chmod 600 /var/spool/mail/*     系统没有权限的话，客户端可能收不到邮件，改变权限
测试:
[root@localhost ~]# mail to maomao
Subject: invite
welcom to my home
EOT
[root@localhost ~]#
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Foxmail测试情况

域外互访

首先在配置一个域，方法和上面相同

[root@localhost ~]# dnf install mailx
[root@localhost ~]# yum install postfix
[root@localhost ~]# yum install dovecot

[root@localhost ~]# vim /etc/postfix/main.cf
myhostname = mail.qq.com
mydomain = qq.com
myorigin = $mydomain
inet_interfaces = all
mydestination = $mydomain
mynetworks = 192.168.46.0/24

[root@localhost ~]# vim /etc/dovecot/dovecot.conf
protocols = imap pop3 lmtp
login_trusted_networks = 192.168.46.0/24

[root@localhost ~]# vim /etc/dovecot/conf.d/10-mail.conf
mail_location = mbox:~/mail:INBOX=/var/mail/%u

[root@localhost ~]# systemctl restart dovecot
[root@localhost ~]# systemctl stop firewalld
[root@localhost ~]# setenforce 0
[root@localhost ~]# useradd doudou
[root@localhost ~]# echo redhat | passwd --stdin doudou
[root@localhost ~]# useradd xiaodou
[root@localhost ~]# echo redhat | passwd --stdin xiaodou
[root@localhost ~]# chmod 600 /var/spool/mail/*

测试
[root@localhost ~]# mail to doudou
Subject: hello!
hello doudou
wsroot
EOT

[root@localhost ~]# vim /etc/resolv.conf    dns服务器配置
nameserver 192.168.46.130
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配置DNS服务器

[root@localhost ~]# yum install bind -y
[root@localhost ~]# vim /etc/named.conf
[root@localhost ~]# vim /var/named/named.openlab.com
[root@localhost ~]# vim /var/named/named.qq.com
[root@localhost ~]# vim /etc/resolv.conf
nameserver 192.168.46.130
除了这里不要忘了在另一台虚拟机上配置该步骤
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named.conf

named.openlab.com

named.qq.com

测试：

结果：