I am using the IP2COUNTRY data in my site, to trap spammers. What I do, is give them a drop-down menu with selection for the country they are in. Then I compare that country with the country shown by their registration IP. If those two do not match, then the person or the script attempting to register gets a "Thank you for your registration, you will receive an email etc" message, which of course they never receive, while their IP is entered in the banned IP list in the vBulletin options. Another simple anti-spam measure, is to check the TimeZone of the country entered, vs the Timezone selected by the person/script trying to register. If they do not match, then again, the IP is banned. Finally, one other measure, simple but effective: if the time taken to fill in the registration form is less than (say) 20 seconds, there is no way a person is trying to register, it's probably a script, so again, the IP is banned. In about one year I am running these checks, they has trapped more than 25,000 IP addresses and greatly reduced the number of spammers registering in our site.
However, I've done those modes in vB 3.0.17. I have no idea how to do the same things in 4.2, so if someone can do it, I would be grateful.
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07-18-2012, 08:27 AM
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