I have OS X Server 10.6.5 running on a new Mac Mini (server model), serving several functions among which is iChat Server (iChat and Pidgin on Windows as clients). In the iChat log in Server Admin, I kept seeing entries about connecting to proxy.eu.jabber.org. It's for our office network and I wasn't excited about external access to it, so I disabled server-to-server XMPP federation and now the connections just time out. But why is it doing that in the first place?
Sample log entry:
(datetime) (servername)jabberd/resolver[portnum]: [xmpp-server._tcp.proxy.eu.jabber.org resolved to 208.68.163.220:5269 (300 seconds to live)
then:
sending dialback auth request for route '(full server hostname)/proxy.eu.jabber.org'
A couple minutes later, it comes back with:
dialback for outgoing route '(full server hostname)/proxy.eu.jabber.org' timed out
That is due to iChat bridging your jabber server to the jabber network in order to be able to talk to other jabber users, its configured to do so by default.