SMF Mod Site

Mod Name:
Anti-Spam Verification Questions for SMF 1.1.x
Created By:
Spam Prevention
First Created:
November 19, 2008, 08:09:48 PM
Last Modified:
January 22, 2014, 03:28:43 PM
Latest Version:
Compatible With:
1.1.7, 1.1.19
Total Downloads:

Download this mod (5kB) [1578]
Manual Install Instructions for SMF


Adds SMF 2.0's anti-spam verification questions to SMF 1.1.x versions. You can add up to 5 questions which must be answered by the applicant before registration is permitted.

Here are some examples of types of questions that could work. I usually put a hint in the question so that humans can easily figure out what to enter. Spambots on the other hand don't understand human hints.


  • What year is it? (4 digits)
  • Are you a robot? (yes or no)
  • Please leave this answer blank.
I wrote this modification especially just for all of you 1.1.7 forum operators to see if I can solve your spambot problem once and for all. I've been chuckling as I've been writing my codes, thinking about all the probably weeks of effort that the spambot programmers put into their spammer scripts, thinking that with a few days worth of my own labor I may have possibly wiped them out completely!


The settings for this modification are located in Admin -> Members -> Registration -> Settings.

Revision history

Version 2.0 (January 22, 2014) final release Verified compatibility with SMF 1.1.19. It's almost certain that it's compatible with all SMF 1.1.x versions since it's been verified on 1.1.7 and 1.1.19, which indicates to me that the code in the affected area was never changed. This is an end of life release.

Version 1.02 (November 25, 2008) Increased question length from 40 to 60.

Version 1.01 (November 24, 2008) Fixes undefined index errors.

Version 1.0 (November 23, 2008) Original release.


      If you use this modification and like it I'll appreciate if you would support my modification package authoring work by making a small donation even if it's only a dollar. Thanks guys.