Search against a remote server?

Hi,

I can easily search against all of my three OpenFire servers using a client that is logged in to that server, Howerver if I want to search against Server 2 while logged in with a client on Server 1, I get an error message saying that the search server cannot be found.

Is it possible at all to do a search against a remote server when logged on to a different one?

Thanks,

Adam