Applying Group Policy to Admin Groups

Hi, I need to make a specific Group policy apply to a set of computers that when a domain admin (e.g. any one in the following groups: Domain Admins, Enterprise Admins, Schema Admins) it take effect.

I currently have an OU with all of my servers in, that I have configured a GPO object (Called Servers Policy) with the selected groups configured to have the policy apply to them when they logon.

The problem is the policy does not work – no admin is picking up the settings.

I have blocked policy inheritance, and set no override – I have also enabled loopback in replace mode, but to no avail.

Can anyone help?