How would I go about blocking auto posters without using captchas when anybody makes a post. I have a problem with some people using auto posters on my forum and they are kinda of annoying
All you can really do is block the IP that's making the auto post request.
Registration Security Question is not gonna working when a real person has to register in the first place
By "not working", do you mean not showing or what?
Adding a Registration Security Question is not gonna keep people with auto poster away from my forum
I recommend paying those users a visit - make sure to bring along a big axe. That should be enough to encourage them into never coming back to your forum again.
Otherwise, they'll just keep finding ways to annoy you and gloat from the excitement of doing so.