I fixed the outgoing mail server on the wiki. It might take a day or two to finish delivering messages, it might not. There's a limit of 150 outgoing messages on my mail server, so that might happen. Hopefully it won't happen, though, and it's already flushed its cache.
So sometime in the next day or two you should start getting email notifications from the wiki again. This also affects the test Drupal installation going over there--it makes it work again.
Mail fixed on the wiki
Moderator: Lucifer