Sorry, the mailing lists have been moved to https://list.tuwien.ac.at/sympa
Please create yourself a user there (if you don't have one) and then subscribe to a list of your choice:
new lva-org-list
new lvatest-list

Note: When subscribing you will get an authorization error, but a request should come in and when i okay it you will see the list and its archive on the web frontend.