Problems with rsync 2.66 on freebsd

[fire67]

Hello , i'm on freebsd 5.4 and i have a problem with rsync 2.66.When i do "rsync -r /backups/bsd1 --delete cell at sceen.net:backups" i have that :

# rsync -r /backups/bsd1 --delete cell at sceen.net:backups
rsync: Commande introuvable.
rsync: connection unexpectedly closed (0 bytes received so far) [sender]
rsync error: error in rsync protocol data stream (code 12) at io.c(443)

I don't understand why i have this problem because the syntax is correct