I have 140000+ users registered on the site. But I think at least 30% are spammers. There are 3 options available with phpfox to control spammers.
1. 2 way verification
2. SMS registration
3. re-captcha
Presently I have avtivated re-captcha , but spammers are able to bypass this. Though it has stopped the huge flow of spammers but still it is not fullproof.
Can anybody tell me the process of first two options ? or which one is the best option to control spammers ?