Hello. No, there is not. An anti-spam tool is planned to be added to ForumUp forums some time this year, but for now, we just have to delete users one by one. You can ban certain email extentions so no one can register with that email extention. You use the "wildcard" star in front of it. For example, I have banned, *@cashette.com, as we were getting a lot of spam registrations from various email addresses from cashette.com.
Be careful with banning email extentions, though. You would not ban Hotmail or Yahoo, for example, as many "innocent" people use those email accounts.
Please give the direct url to your forum, not the url to your website.