求救：怎么ftp不上服务器？

baditak

我用的是REDHAT，VSFTPD，配置如下：
anonymous_enable=YES
local_enable=YES
write_enable=YES
local_umask=022
anon_upload_enable=YES
anon_mkdir_write_enable=YES
dirmessage_enable=YES
xferlog_enable=YES
connect_from_port_20=YES
chown_uploads=YES
chown_username=root
xferlog_file=/var/log/vsftpd.log
xferlog_std_format=YES
pam_service_name=vsftpd
chroot_local_user=YES

输入命令:ftp 192.168.12.173
返回信息:Connected to 192.168.12.173.
500 OOPS: unrecognised variable in config file
Connection closed by remote host.

是不是配置错了？错在哪里？