Necessary folder permissions

[hameau]

Backup and data files are written by the web server (apache/php for you?). Most likely, those processes are running as your ftp user. You should be able to see the user and group numbers in your ftp client. I would say that it's worth making some effort to avoid permissions of 0777.

If I understand the all-inkl.com FAQ correctly, you have ssh access so you can find the owner details more easily or manipulate ownership and permissions from the shell.