I use public static IP provided by ISP, I use static IP for this network card of server1 (my mail server).
I changed the IP address in the article.
----------------------------------------
Code:
root@server1:~# cat /etc/hosts
127.0.0.1 localhost.localdomain localhost
118.69.222.223 server1.mydomain.com.vn server1
# The following lines are desirable for IPv6 capable hosts
::1 localhost ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts
Code:
root@server1:~# cat /etc/resolv.conf
nameserver 118.69.222.223
nameserver 203.162.4.190 ---> DNS ISP
nameserver 203.162.4.191 ----> DNS ISP
Code:
root@server1:~# dig mydomain.com.vn mx
; <<>> DiG 9.5.1-P2 <<>> mydomain.com.vn mx
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 62527
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 2
;; QUESTION SECTION:
;mydomain.com.vn. IN MX
;; ANSWER SECTION:
mydomain.com.vn. 604800 IN MX 1 mail.mydomain.com.vn.
;; AUTHORITY SECTION:
mydomain.com.vn. 604800 IN NS server1.mydomain.com.vn.
;; ADDITIONAL SECTION:
mail.mydomain.com.vn. 604800 IN A 118.69.222.223
server1.mydomain.com.vn. 604800 IN A 118.69.222.223
;; Query time: 7 msec
;; SERVER: 118.69.222.223#53(118.69.222.223)
;; WHEN: Fri Oct 23 22:51:56 2009
;; MSG SIZE rcvd: 108
Code:
root@server1:~# dig mydomain.com.vn any
; <<>> DiG 9.5.1-P2 <<>> mydomain.com.vn any
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 52347
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 2
;; QUESTION SECTION:
;mydomain.com.vn. IN ANY
;; ANSWER SECTION:
mydomain.com.vn. 604800 IN A 118.69.222.223
mydomain.com.vn. 604800 IN SOA server1.mydomain.com.vn. root.mydomain.com.vn. 2 604800 86400 2419200 604800
mydomain.com.vn. 604800 IN NS server1.mydomain.com.vn.
mydomain.com.vn. 604800 IN MX 1 mail.mydomain.com.vn.
;; ADDITIONAL SECTION:
server1.mydomain.com.vn. 604800 IN A 118.69.222.223
mail.mydomain.com.vn. 604800 IN A 118.69.222.223
;; Query time: 51 msec
;; SERVER: 118.69.222.223#53(118.69.222.223)
;; WHEN: Fri Oct 23 22:52:53 2009
;; MSG SIZE rcvd: 165
Code:
root@server1:~# host server1
Host server1 not found: 3(NXDOMAIN)
root@server1:~# host server1.mydomain.com.vn
server1.mydomain.com.vn has address 118.69.222.223
root@server1:~#
thank you for help!