I've got a simple problem: I have ULX on a TTT server, and people who are in the "user" group can PM each other, which makes ghosting super easy. I've tried using the command "ulx groupdeny user psay" but that doesn't work, it tells me "Group "user" doesn't have access to "psay"".
Despite this, users can still PM each other using !p or through !menu. I've searched the forums, but can't find any solutions for this. How can I fix this?