SSH key for shell users

[bswinnerton]

When creating a new shell user, it bypasses my sshd_config file for requiring an ssh key to login if I have the authorized_keys file in /var/www/sitename.com/home/sshuser/.ssh/ . They can simply login with no password and no key file. How can I configure it so that they too need an SSH key to access the server?

[falko]

http://www.howtoforge.com/ssh_key_based_logins_putty