eBox Backup Service
The eBox-platform includes a backup program, and eBox Technologies - the company behind eBox - offer an offsite backup service for eBox.
It easy to set up, with most of the configuration built into the platform's web based administration application, and offers scheduled full and incremental backups for about €5 per month.
I have over fifteen years experience in systems and network configuration and support. For most of that time I have been working with Open Source Software, and believe that Open Source software provides the best solutions for business, educational and personal use.