I'm getting similar problems. I HAVE activated DNS, and setup a primary zone with a machine record for the xServe with it's local IP address. And I reset the TCP-IP settings for the server to point to itself for DNS. (I also setup DNS forwarding in the DNS control panel so that general requests are forwarded to our usual service provider DNS servers.)
Use of network utility --> lookup confirms that this entry is correct.
HOWEVER, when I this record as my hostname (server1.myexample.com) I get the following error: "No virtual host found for iCal Service".
Do I need to do anything else in my DNS to make this work? Do I need some form of alias or service record? Am I using the wrong thing as my hostname for the iCal configuration? is that additional information I can provide to help get a diagnosis?
same story for me.
Have you, by mistake, deleted a computer entry with your server name in the computer list of WGM?
I did that and I am wondering this could be my fatal error…