Hi, we are having the same issues as others with Dreamhost that the emails stopped working about a month ago. We set up a second user and the emails started to work again, but the subscribe/unsubscribe stopped working.
People can now subscribe, but no confirmation email is sent. However the unsubscribe is not working at all.
I understand you are working on a new solution to suit the Dreamhost policies, however, do you think there is something else we can do in the meantime to fix the unsubscribe button.