The London data centre has been suffering from the effects of a couple of denial of service (DoS) attacks over the last 12 or so hours. The attack late yesterday (26 December) lasted about an hour and a half. Today’s attack started at 05:37 UTC and is currently ongoing. The data centre staff assure us that they have identified the problem and are implementing a fix for it.
This affects server NC023 (the relay server) and server NC027 (the main mail server), as well as virtual private servers hosted in London. As far as we know, the servers themselves are up and connected to the network, but the attack is causing them to be inaccessible.
We’ll update here as soon as we know more.