There are major issues with this forum. Please solve these first before opening it again. Rely for the time being on the Yahoo forums.
Email send to the email address(es) is not creating a new discussion.
An Email send to the email address in a response creates a new message in a topc, but the contents is lost, aka not visible.
Activating watches on messages I create or replied to are generating index errors (see your Apache log files).
Email address, though hidden, are shown.