Re: gethostbyname: unknown error
You DNS server probably cannot resolve your host name to IP address. If you know IP address of the server, try to use it instead of host name.
You may try to type "ping your.server.host.name" on command line to find out if it is really DNS problem.
You may try to type "ping your.server.host.name" on command line to find out if it is really DNS problem.