'indexftp.barcap.com' only (sans the 'ftp.' prefix) allows me to connect to an FTP server
>ftp indexftp.barcap.com Connected to usftp.barcap.com. 220-Connected to usftp.barcap.com. 220 FTP server ready. User (usftp.barcap.com:(none)): -- http://mail.python.org/mailman/listinfo/python-list