I use idrive aws3 which works great with rclone. I also synced files with AWS3 in the past but that required me to edit aws_s3.py file and hard code endpoint_url = 'https://your-endpoint-url',. It was the older version which didn't have endpoint url option in form. Now version 2.0 has endpoint URL option where I added the URL and it accepted successfully. But Cron won't let it back up with the following error.
An error occurred (MissingContentLength) when calling the PutObject operation: You must provide the Content-Length HTTP header.
