I've been using Cobian Backup at my non-profit customers. It's free, it works great, very stable, has email notifications etc.
This year the author sold the code and no longer offers support.
Lately I'm having problems with old backups: even if I set it to delete backups older than X days, it doesn't delete them.
I've noticed the problem on 2 sites: one where the backup destination is a Synology NAS and one where the backup target is a WD Mirror NAS. It works properly on a site with a QNAP NAS.
Don't know if the problem is the NAS. If I go in Cobian and manually delete old backups, the operation succeeds, no problem.
Anyone else encountered this and knows a solution?