Set up iCal Server

Hi there,

I recently upgraded my server to 10.5.8 and now I want to use iCal across machines and iPad/iPhone. It's a standalone server that runs Afp, Firewall, Nat, Open Directory and Print. Coming from 10.3.9 I use the advanced settings. I've filled out all settings from an example in the Lynda training series but when I want to start iCal services I get an error: "No virtual host found for iCal Service". I used the default setting for Host Name: "localhost". What am I missing?

10.5.8 Server

G4 1.25 MDD