user jail attempted to execute forbidden commands - command: /usr /lib/ssh/sftp-server

[Werner K. <Wer...@ce...>]

when trying to get "rssh in an chroot jail" now for 3 days, having read all
documentations, man pages and a lot of discussion - now I don't have any idea
how to get final success. I think my chroot-jail looks rather fine as strace
doesn't report unresolved lib-calls. sftp-client performs authentication dialog
(DSA) and session is immediately closed again without any prompt.

Content of rssh.conf:
allowsftp
umask = 022
chrootpath="/home/jail"

/etc/passwd:
jail:x:1000:1001:chrootjail:/home/jail:/usr/local/bin/rssh

content of /var/log/messages:
Aug  1 17:38:54 hrvadbx001 sshd[21044]: Server listening on :: port 22.
Aug  1 17:39:17 hrvadbx001 sshd[21045]: Accepted publickey for jail from
::ffff:"ccc.ccc.ccc.ccc" port "ppppp" ssh2
Aug  1 17:39:17 hrvadbx001 sshd[21047]: subsystem request for sftp
Aug  1 17:39:17 hrvadbx001 rssh[21048]: setting log facility to LOG_USER
Aug  1 17:39:17 hrvadbx001 rssh[21048]: allowing sftp to all users
Aug  1 17:39:17 hrvadbx001 rssh[21048]: setting umask to 022
Aug  1 17:39:17 hrvadbx001 rssh[21048]: chrooting all users to /home/jail
Aug  1 17:39:17 hrvadbx001 rssh[21048]: user jail attempted to execute forbidden
 commands
Aug  1 17:39:17 hrvadbx001 rssh[21048]: command: /usr/lib/ssh/sftp-server

./configure of rssh was made --with-sftp-server=/usr/lib/ssh where it actually
resides. Even sshd_config points to the right entry. In this discussion-forum I
read 2 or 3 times the same problem. But I did not really understand what the
solution could be. I use SuSE- SLES-9, OpenSSH-3.8 and rssh-2.2.3

Is there anybody who could give me an advise how to continue.