iWeb is a Webeditor for Mac platform, which allows you to create a website and publish it through an integrated ftp client.
Here below are the correct configuration settings:

ftp Server Settings:
Server address: ftp.domainname.xxx
User name: login@aruba.it
Password: password
Directory/Path/host folder: /www.domainname.xxx
Article ID: 5086, Created: June 25, 2012 at 3:53 PM, Modified: June 25, 2012 at 3:55 PM