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Bad Behavior Blocking PayPal Callback

I’ve been struggling with registration spam on one of my retail websites.  Currently it’s running a shop based on WordPress, so I have access to a plethora of plugins to assist with this issue.  I had been using Stop Spammer Registrations, along with re-Captcha, which only worked for so long.  Somehow the spammers just keep getting through, so I took the next step to fortify with Bad Behavior.

Bad Behavior is a WordPress plugin that helps stop spammers before they even access your site.  To assist the plugin, it makes a call out to the http:BL API, which is available for free.  Once you get the API setup, simply copying it into the plugin is the extent of the setup for normal operation.  However, I ran into an issue with getting my transactions confirmed, because I believe it is blocking the callback IP from PayPal.

So, I had to add all of PayPal’s callback IPs to make sure they are getting through and not inadvertently interrupting purchases.  Thankfully Bad Behavior has a very easy to use White List option where you can copy over as many IPs as necessary.

List of IPs used by PayPal. – https://ppmts.custhelp.com/app/answers/detail/a_id/92

I’m closely monitoring purchases and making sure the callbacks are working properly.  As of now the combination of spam blocking Word Press plugins are keeping about 75% of the spam out.  Unfortunately I’m still looking into options for me to do locally to help combat the massive amount of registrations now found in my WordPress user database.

One thought on “Bad Behavior Blocking PayPal Callback”

  1. I’ve had similar problem, and this article has helped me so much. I now trying to install the plugins and see if it works good for websites. This is really a good idea, blocking the callback IP from paypal. False registrations are somewhat troublesome.

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