Of course the obvious solution is to ban the person who is causing the problem, but because he clearly can't, due to the limit, I suggested that he get more people to take care of his server. If someone is spamming on his server, he should get more admins to take care of his server. The admins would then be able to mute the chat whenever someone spams. Since most players on the game aren't exactly patient, they'd probably leave the server, then the admin would be able to unmute the chat after they leave. Of course you could always just kick the player, but if they constantly keep coming back then I suggest what I just said above. If someone is lagging the server and is unwilling to leave then just kick them. If they keep coming back then you may need to unban someone in order to solve your problem. If the person you unbanned, however, returns with their, oh lets see, spamming problem perhaps, then just do what I mentioned above. See you don't exactly have to ban the person who is causing the problem although it would be the most efficient way to handle it. There are many ways to get rid of players who are causing problems without having to ban them. This is why you get more admins who know ways to get rid of players without banning them. There are many creative ways to get rid of players without causing too much chaos in a server ;P