If the server has an InSim that has a safety feature, they are bound to have some sort of banning system, like JPeace + zeugnimod said, check to see if they have a forum and tell them there.
Quote from Sutinennn :In rallycross, when I was at the first place, the second guy got mad and crashed me to wall. On PVL Crash 'n Fun 1 or a proper Rallycross server? Since real rallycross I can barely find on demo. Though most demo users, and I don't mean the ones posting on the forums, are very rude, are crashing, complete nubs, banning for no reason, and more. This just makes me sick every time I join a demo server. I'm even thinking about making my public server a public demo server just so demo'ers can have clean racing. Please tell me if this is a nice idea.