10.4.3 Server using Kerberos for FTP authentication

I have also tried Fetch. Seems to point to an FTP service misconfiguration. The transcript:

220 myserver.example.com FTP server ready.
ADAT
503 You must issue an AUTH first.
AUTH This command is checking whether this server supports Kerberos or GSS security, see RFC 2228
504 This command is checking whether this server supports Kerberos or GSS security, see RFC 2228 is unknown to me
AUTH GSSAPI
334 Send authorization data.
gss_send_tok_buff = ftp@myserver.example.com.
ADAT
535-GSSAPI error major: Incorrect channel bindings were supplied
535-GSSAPI error minor: No error
535 GSSAPI error: accepting context [ Incorrect channel bindings were supplied – No error ]
release 2
service 0gss_send_tok_buff = host@myserver.example.com.
ADAT
535-GSSAPI error major: Miscellaneous failure
535-GSSAPI error minor: Wrong principal in request
535 GSSAPI error: accepting context [ Miscellaneous failure – Wrong principal in request ]
release 2
service 1

and the klist

01/03/06 09:09:22 01/03/06 13:44:55 host/myserver.example.com@MY.CORRECT.REALM
renew until 01/10/06 03:44:55
01/03/06 09:09:22 01/03/06 13:44:55 ftp/myserver.example.com@MY.CORRECT.REALM
renew until 01/10/06 03:44:55