Note: Depending on your install file names and locations may be different
After making changes to the main named.conf it is advised to check the config before restarting the service.
If running in a chrooted environment
$ named-checkconf -t /var/named/chroot /etc/bind/named.conf.local
Like the main config, after editing a zone file it is advised to test it directly.
#$amed-checkzone example.com /var/cache/bind/zones/example.com