8 year after the making of this thread, i’m still having the same problem. I’m italian (sorry for my english), and i’m using and italian hosting (Aruba.it). I’ve tryed the email script in PHP (mailer.php) and it worked (even if the email arrived as spam), i’m using an email created on the service provider as email for WordPress…so what’s wrong? Looks like BBpress changed a lot and can’t work on the files as someone said in the thread cause they’ve changed. I’m also trying to contact the hosting, but still didn’t get any answer.