Help with Private Server CO2! Please help

Hallo,

When I have dowloaded a Private Server client and I start the client then he give me an error''Connecting failed due to server maintenance or internet congestion. Please Re-login later.'' I dont know what I most to do. Please can anyone help me with that? I want to play the clients. BTW: every private server is that error.

Please give me the information to Fix it?

Greates!

Well either the server isn't up or the file in your client, server.dat doesn't have the right IPs in it.. If it's 127.0.0.1 then it's wrong when you're connecting to someone else.. It has to be their IP