I am using XF 1.4.1 and have some of the TAC anti-spam add-ons installed: Tac AuthCaptha, TAC De-Dos - Reduce the effect DOS attacks usually caused by spam bots, and TAC StopCountrySpam - black/white list country IPs from registering.
I disabled the other TAC add-ons as they were stopping legitimate members from signing up. Even I couldn't sign up when I tested it with the other TAC add-ons installed.
In the user registration options area, I have Solve Media enabled. I have also tried question and answer and Google ReCaptcha. None of them works.
Currently, if I don't check the forum for a day, I go back and see dozens of spam threads. It's pushing members away and discouraging others from signing up.
I have tried a lot of different anti-spam add-ons for my discussion forums. The setup mentioned above seems to work ok with another forum of mine; but the spammers are getting through on the other forum.
What other solutions are available to me?