Thanks to all who helped already through this forum. My VAW 2.0 clients are backing up since a few weeks to my B&R server/repository and nearly everything is working fine. It is easy to check via the B&R interface, when the last backup was taken and I am getting mails from my B&R when something went wrong or when a backup was successful.
However, I do not get an Information when nothing happens. Is it possible to get a mail from B&R when there were no backups in the last month or weeks or whatever period? Because some clients are out of office with their notebooks or at a vacation for a long time with the pc turned off.