2 new Tools available in /chatadmin/security to fight against flooding the chat
maxLenthMessage
Maximum number of characters an user can send per message.
Default is 512.
When user tries to send a longer message, message is cropped to N-1 chars
maxLinesMessages
Maximum number of RETURN character in a chat message.
Default value is 8
When users inserts more than N RETURN characters, messages is cropped.