dns 启动调用不到name.rfc1912.zones下的empty 文件是怎么回事？

报错：
[root@localhost named]# service named start
启动 named：
Error in named configuration:
/etc/named.rfc1912.zones:29: unknown option 'zone'
/etc/named.rfc1912.zones:35: unknown option 'zone'
/etc/named.rfc1912.zones:41: unknown option 'zone'
/etc/named.root.key:1: unknown option 'managed-keys'
/etc/named.conf:60: '}' expected near end of file
[失败]

/var/named 下已经有.empty文件的，文件名确认是没有错的，为什么还说是未知选项？