We're aware of an issue with emails sent from the forum and are working on a fix. For now that means account confirmation and password reset emails cannot be sent. We're hoping to have this fixed in the next couple days.
One final update: emails from the forum now come from admin (at) forums (dot) bottlehead (dot) com. This is a change from previous email addresses. Please whitelist this email address to ensure email is not delivered to your junk email.