Thanks. I have been messing with those settings for a while now, I have no idea how this works. Does “SMTP_FROM_ADDRESS” need to be the same as the login address? I have tried an arbitrary one using my own domain, and also the same one as login addres, both don’t work. Can I use gmail (I’m trying to) and if so do I need to configure something special in gmail? The latest settings I have attempted is shown below. So far, I cannot get a registration confirmation email for signing up on my instance.