So just a little while ago I had a user who trolled and flamed and showed immense disrespect towards staff. I gave him fair warnings which he tossed out the window and threatened to do more harm if I took any action. That was enough, I wasn't going to play his game so I banned his account and the IP for good measure. Now the problem is he's using proxies to get past me. Luckily he's not too smart, he calls me out every time he gets past but I can't sit here all night banning accounts. As a last ditch effort, I switched the forum to manual validation for new registrations after banning all his alternate accounts and IPs. The problem with this is obvious. I'm getting registrations and I can't tell which one is real and which one is not. I tried running the IPs in google but that doesn't help. Out of the 3 accounts I ran, only one showed up as a spam IP. This is on a vBulletin 3.8 installation. What solution is available for getting rid of such spammers? We're going to switch this forum to xenForo in a matter of days so it'll be vulnerable in the transition process. How can I get rid of him for good now and keep him away while we're transitioning to xF?