"Authentification DNS failed" error?

[Grodus]

I was playing on a server, then I get this. I restarted blockland, and my key logged in, but when I try joining servers... boom. this message.

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[Grodus]

NOEDIT: Whoops, it only seems to be happening on Atomic Lance's server. And a friend of mine who was on the server said the server shut down. Locking.