[HeLiOn_PrImE]

It's not a ddos attack. It's some sort of tool that immediately crashes the server. I am now installing Crash Detect. I don't know if it will help me, because it's made for code failure.

These guys send one chat message avoiding the anti ad script with spaces. They don't spam messages, they don't spam kills or anything. After a few seconds they crash the server with one hit.