For many years, concurrency-interest was the mailing list to discuss j.u.concurrent and related topics. The mailing list was hosted on a server maintained by Prof. Doug Lea. Sadly, the mailing list didn't survive an OS upgrade and has been unavailable for some time.
A new mailing list concurrency-disc...@openjdk.org [1] has been created to replace the old list. It's a completely new list, the archives and subscribers from the previous mailing list have not carried over. As the name suggests, the mailing list is for discussion of the j.u.concurrent API/implementation and related topics. It's not the place for support questions.
-Alan [1] https://mail.openjdk.org/mailman/listinfo/concurrency-discuss
