He intentado mandando un fichero pro rsync y si funciona.. donde no me funciona es con el script
ftpbackup:~# rsync -axSRzv rescue 87.98.230.131:/root/
The authenticity of host '87.98.230.131 (87.98.230.131)' can't be established.
RSA key fingerprint is f4:6f:74
e:56:e4:2f:43:2f:01:38:7e:2c:c7:91:1c.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '87.98.230.131' (RSA) to the list of known hosts.
sending incremental file list
rescue
sent 3151 bytes received 31 bytes 489.54 bytes/sec
total size is 22313 speedup is 7.01
ftpbackup:~# rsync -axSRzv rescue 87.98.230.131:/root/
sending incremental file list
sent 31 bytes received 12 bytes 12.29 bytes/sec
total size is 22313 speedup is 518.91
ftpbackup:~#
voy a volver a hacer el script por si acaso.
Bueno he vuelto a configurar el script desde 0 y ya funciona correctamente tengo para un par de horas como minimo.. asi que volvere en un rato... voy a fumar un cigarro.