Hey Keith,
I am quite certain I don’t use any of those things (will confirm this once my server is back up and running!), the most it would be is a plugin for a verification code…but I think I removed that. All registration forms are by the theme though – I’m using the Custom Community theme.
Folgerj, that’s a good question – until recently I wasn’t allowing any registrations (it’s these that are the problem now, comment spam is taken care of), however I have installed an online exam plugin called WatuPRO and in order to charge a fee for sitting the online exam, people have to register as a “student” and then they can pay. This is the only way the plugin uses that functionality of collecting a fee for the exam. Unfortunately this means I have to set it to “anyone can register”…
Unless you have another solution?
Thanks for your help!