Using Automator Folder Actions

I have an automator folder action that runs to take any pdf file dumped in to the folder, send to the printer and then delete it.

How do I make this run on a server that I'm not logged in to (effectively as a service), so that if a pdf file is generated somewhere on the network (maybe even a PHP script on a web site hosted on this server) and copied to this folder it still auto prints to the network printer?