On the move: XMPP and email

Just an heads up: I'm moving the XMPP and the email service between two servers. XMPP will be down for a day or so, email should be a painless move.

There will also be some changes:

• XMPP domain simplicidade.org will move to ejabberd: much lower resource usage than the current Wildfire;
• email will start to be routed through Postini.

So I might be "off" for a day or so until everything catches up.