ftp问题！请帮忙。

finger

[root@imd1 vsftpd]# ftp xxxxx
Connected to xxxxx.
220 imd2 FTP server (Version 5.60) ready.
334 Using authentication type GSSAPI; ADAT must follow GSSAPI accepted as authentication type GSSAPI error major: Miscellaneous failure GSSAPI error minor: No credentials cache found GSSAPI error: initializing context GSSAPI authentication failed
334 Using authentication type KERBEROS_V4; ADAT must follow
KERBEROS_V4 accepted as authentication type Kerberos V4 krb_mk_req failed: You have no tickets cached Name (imd2:informix):
530 Must perform authentication before identifying USER.
Login failed.
Remote system type is UNIX.
Using binary mode to transfer files.
ftp>; by


为什么啊！！谢谢各位！

xuhehao

GSSAPI和KERBEROS_V4验证都失败了，是什么服务器啊？