Kubuntu – Fix Trash Has Reached Maximum Size

You are trying to set permissions for a file system that isnt recognized. THE SYSTEM FUNCTION that "deletes" is not the system used in a linux based bit unless its emulated. When you tell it to delete it tries to write to the "trashbin". You are only moving stuff. To remove it you need to access the file system, not raw data. Its going to kick the data back because you are just asking it to move not delete, the delete command isnt within its wheelhouse./ regardless of the command you use.

If you can mount the partition/drive of the server in samba or what ever you like you may be able to use that to delete. Try virtually mounting, with permissions. If you only have read/write but not delete/move your going to have a bad time.