From my hosting company:
We are experiencing network issues as a result of a power failure at our data center.
As the outage occurred only on the floor our servers are housed in, and because power was still being generated to the rest of the building, our backup generators did not identify this as an outage and did not respond as they would to a usual power failure.
It took over 16 hours for them to get an electrician to rewire the circuits. Sorry if any email bounced or for the unavailable servers.
Everything should be running smoothly now…hopefully.