backup with DAR to external FTP

I'd love to have the option to do backups with DAR but store the offsite, using a external FTP or SSH w/key to a external server.

Have seen e-smith-backup and sme-backup2 ... but none them do this.
Would be dificult to put those as options ?

I discovered that on shell you can do:

Quote

ftp -n abandonemicrosoft.net<<EOF
> user aAAAA XXXX
> binary
> cd REMOTE_SERVER_DIRECTORY
> put FILE_TO_UPLOAD
> quit
> EOF

to upload any file to your server. Just would love to see this on a web interface with other options.

Reason: I have 300GB storage on Bluehost.com and would like to create one ftp account for each client, with let's say 10 GB limit, and configure SME server to upload a full backup every night.

Thanks

Jáder