postfix简单记录

1.将/etc/postfix/main.cf编辑

myhostname和mydomain等

2.即可测试发送邮件

3.安装DNS功能，其中13和21行改成any

yum install bind bind-chroot
vim /etc/named.conf
 11
 12 options {
 13         listen-on port 53 { any; };
 14         listen-on-v6 port 53 { ::1; };
 15         directory       "/var/named";
 16         dump-file       "/var/named/data/cache_dump.db";
 17         statistics-file "/var/named/data/named_stats.txt";
 18         memstatistics-file "/var/named/data/named_mem_stats.txt";
 19         recursing-file  "/var/named/data/named.recursing";
 20         secroots-file   "/var/named/data/named.secroots";
 21         allow-query     { any; };

4.编辑配置文件，新建两个域名

vim /etc/named.rfc1912.zones

43 zone "abc.com" IN {
 44         type master;
 45         file "abc.com.zone";
 46 };
 47 zone "test.com" IN {
 48         type master;
 49         file "test.com.zone";
 50 };

5.编辑文件来写明主机地址和邮件MX的地址

vim /var/named/abc.com.zone

1 $TTL 1D
  2 @       IN SOA  @ rname.invalid. (
  3                                         0       ; serial
  4                                         1D      ; refresh
  5                                         1H      ; retry
  6                                         1W      ; expire
  7                                         3H )    ; minimum
  8         NS      @
  9         A       192.168.100.124
 10         MX 5    mail
 11 mail    A       192.168.100.124

6.重启服务即可。