When with us in the company no more mails came and we could also send none more, it went underneath and about that. We google then and found the computer rescue car. After short telephone call the service engineer was there already and we could receive e-mails again.
I could not access any more my file server because he was not indicated me on the job any more. A colleague has recommended me the computer rescue car. According to a short analysis the engineer that found out one of the hard disks was defective. The data could be still saved and be covered up on a new hard disk. Now everything functions again as usual.