I am trying to set up a login form on my main website page that will allow my users to login directly to the Plesk control panel. It is not, however, working.

I have replicated the Plesk login form, replacing

action="" with

action="https://[IP Address]:8443/vz/cp/psa/frameset"

When I try to use the form to log in as admin, it works without trouble. But when I try to login as anything else, I get the normal Plesk login page.

Has anyone else experienced this? How do I get this to work?