[MM3-users] Spam sign ups

Hello all,

I've suddenly started getting a slow but steady stream of fake sign ups. They fail because I'm getting a bounce back from the mail host saying that the email address they signed up with doesn't exist.

I know this was asked a while back on this list, but I'm hoping there might be an update? Any way to add an am-I-human test to the sign up?

Thanks, Seth