My server just started this today. My /mute command doesnt work. In the console it says he tried to speak but he actually speaks. I have no idea why its doing this Help! If you need any other info tell me.
Yes essentials is the plugin that should be doing that. But, there may be another plugin that uses it aswell making it not work properly.
are you using the proper essentials version for your bukkit? list your essentials and bukkit version.