I recently switched from UBB to OT. I currently have my UBB closed, and the "board closed" message is directing visitors to the new URL.

I'd like to remove as much of UBB as I can from my server, but I would like to keep the message functioning so that users can find the new board.

What files do I need to leave for this to work? What can I safely remove?

Thanks!

Why not download and use the UBB move kit and then you can remove all of the UBB files.