Throw an error early when the server name is not known.
Throw an error early when the server name is not known.

enStratus/unix-agent,buzztroll/unix-agent,enStratus/unix-agent,buzztroll/unix-agent,buzztroll/unix-agent,enStratus/unix-agent,buzztroll/unix-agent,JPWKU/unix-agent,enStratus/unix-agent,JPWKU/unix-agent,JPWKU/unix-agent,JPWKU/unix-agent