http://clojars.org discussion and “support”, see http://status.clojars.org for status.
practicalli-john 2018-07-19T16:37:39.000557Z
I asked Jfrog, the people that run https://jcenter.bintray.com to mirror or proxy http://repo.clojars.org a while ago. It looks like they have done it. So now we can access all our jars from inside the corporate firewall