DNS Server IP address: 192.168.35.141
Install bind/ DNS package
# yum install bind bind-chroot bind-utils
Backup DNS default configuration file
# cp -rpf /etc/named.conf /etc/named.conf.bak
Edit /etc/named.conf file and changed highlighted parameter
# vim /etc/named.conf
options {
listen-on port 53 { 127.0.0.1; 192.168.35.141; };
#listen-on-v6 port 53 { ::1; };
directory "/var/named";
dump-file "/var/named/data/cache_dump.db";
statistics-file "/var/named/data/named_stats.txt";
memstatistics-file "/var/named/data/named_mem_stats.txt";
allow-query { any; }; {Allow here only specific network as per requirement}
recursion yes;
dnssec-enable yes;
dnssec-validation yes;
/* Path to ISC DLV key */
bindkeys-file "/etc/named.iscdlv.key";
managed-keys-directory "/var/named/dynamic";
};
logging {
channel default_debug {
file "data/named.run";
severity dynamic;
};
};
zone "." IN {
type hint;
file "named.ca";
};
/* Add zone file here */
zone "linuxsolution.in" IN {
type master;
file "linux.zone";
allow-update { none; };
};
include "/etc/named.rfc1912.zones";
include "/etc/named.root.key";
Create Zone file
# cd /var/named
# vim linux.zone
$TTL 86400
@ IN SOA linuxsolution.in. root.linuxsolution.in. (
42 ; serial (d. adams)
3H ; refresh
15M ; retry
1W ; expiry
1D ) ; minimum
IN NS linuxsolution.in.
linuxsolution.in. IN A 192.168.35.141
mailzm IN A 192.168.35.141
linuxsolution.in. IN MX 0 mailzm.linuxsolution.in.
Restart DNS service
On CentOS 6.X
# service named restart
# chkconfig named on
On CentOS 7
# systemctl restart named
# systemctl enable named
Make entry in /etc/resolved.conf file as per below
# echo "nameserver 192.168.35.141" >/etc/resolv.conf
# cat /etc/resolv.conf
nameserver 192.168.35.141
Test DNS
# nslookup linuxsolution.in
Server: 192.168.35.141
Address: 192.168.35.141#53
Name: linuxsolution.in
Address: 192.168.35.141
Check MX record
# host -t mx linuxsolution.in
linuxsolution.in mail is handled by 0 mailzm.linuxsolution.in.