Closing session due to incorrect hostname

Hi

I have a fresh install on a windows sevrer 2008 box.

I can connect adium to the server from a remote machine and from the admin console/sessions I can see my session. My friend can aslo connect and I can see his session. I can send an admin message out and both of us can see it in the adium clients.

We can’t see each other though.

I also get these logs in the warn window in the log viewer:

[CODE]

Closing session due to incorrect hostname in stream header. Host: prjatk.com. Connection: org.jivesoftware.openfire.net.SocketConnection@1b1fd9c socket: Socket[addr=/109.109.248.82,port=56258,localport=5269] session: null
[/CODE]

prjatk.com is the server - however in the server settings on the admin screen I see the computer name as the hostname - is that the issue?

If so how can I change that?

this must be a fairly standard problem - not like I strayed off the beaten track or anything?