Back in 2003 Ken Garza aka DeSeNZ!TiZe made one of now my favorite maps called SANITYBARRIER (ws.q3df.org/map/sanitybarrier/).

Despite being released as a beta level, this is one of the best I've ever played. The domain that the mail used to be based on apparently doesn't exist anymore, as it redirects to another website. Any ideas on how I could contact the author?

Recently I was informed about this DeSeNZ!TiZe's account: portfolium.com/kennethgarza1
I sent a message to the author yesterday, waiting for the reply now.