Bind9 basic config

example.com.conf

; create file in /var/named/example.com
; example.com
$TTL 3600
example.com. IN     SOA   ns1.example.com. dnsmaster@example.com. (
                                2021062601  ; Serial
                                3H          ; refresh after 3 hours
                                1H          ; retry after 1 hour
                                1W          ; expire after 1 week
                                1D)         ; minimum TTL of 1 day

        ; Name Server
        IN      NS      ns1.example.com.     ; 

        ; Mail Exchanger
        IN      MX      50 mail.example.com.      ; Your Mail Server

ns1                             IN  A           192.168.1.52
example.com.                      IN A            192.168.1.52
mail                            IN A            192.168.1.52

named.conf

// append zone config at /etc/named.conf
zone "example.com" {
        type master;
        file "example.com.conf";
};