Also, if you remember, place a "No Rush Game" in the game title. This way everyone should know what they are getting into before entering the game. You may have to explain, what you consider "Rushing", because you can rush with any type of army. I have even rushed with an all missile army a time or two. :)

For example, I found once I called me game "Elmo's No Arty", the number of times people brought arty was few. Those few were then given one chance to play again. If they did it again, they were banned at that point.