sftp -s <batch> refuses to connect

[Ralf Corsepius <rc040203 freenet de>]

Hi,

Since having upgraded to FC4, I am experiencing a strange problem with
sftp -b <batch>

"sftp -b <batch> user somesite" refuses to connect:

# sftp -b upload.ftp user somesite
Permission denied (publickey,password,keyboard-interactive).
Couldn't read packet: Connection reset by peer

While "sftp user somesite", i.e. interactively using sftp, works:
# sftp user somesite
Connecting to somesite ...
Password: ...

ssh and scp access to the same site also works.

Any ideas?

Ralf