failed to connect to server.

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so my friend wanted me to play some arma 2 overpoch with him and told me to join this teamspeak. ts.thedeadreturned.com or thedeadreturned.com i try joining and i get "failed to connect to server" and i restarted my computer and internet and nothing. help! here are the logs. 11/17/2016... failed to connect to server.