Emails from GnuPG lists contain:
Gnupg-users mailing list
Gnupg-users@gnupg.org
http://lists.gnupg.org/mailman/listinfo/gnupg-users

The link "Gnupg-users Archives" on that URL does not work. It guides to
http://lists.gnupg.org/pipermail/ which does not work (403 Forbidden).

It should guides to http://lists.gnupg.org/pipermail/gnupg-users/ (with list
name). Same with other lists.