anonymous_enable=NO
local_enable=YES
write_enable=YES
local_umask=022
anon_upload_enable=NO
anon_mkdir_write_enable=NO
dirmessage_enable=YES
xferlog_enable=YES
connect_from_port_20=YES
chown_uploads=NO
xferlog_file=/var/log/vsftpd.log
xferlog_std_format=YES
async_abor_enable=YES
ascii_upload_enable=YES
ascii_download_enable=YES
ftpd_banner=welcome to m
chroot_list_enable=NO
#Port_enable=YES
#Connect_from_port_20=YES
#PASV_enable=YES
ls_recurse_enable=NO
listen=YES
userlist_enable=YES
tcp_wrappers=YES
guest_enable=YES
guest_username=mtianftp2017
virtual_use_local_privs=YES
user_config_dir=/etc/vsftpd/vconf
pam_service_name=vsftpd
这个是配置文件,为什么总报错550 Failed to change directory. Please contact your web hosting service provider for assistance.