MaxMind is a 3rd-party service that uses geolocation tools and other tests to check online orders for fraud. MaxMind does not actually verify cardholder information (this is left to the payment gateway), it instead focuses on verifying that the cardholder is actually the person making the online transaction. It is completely separate from the payment gateway, and serves as an extra level of security above your gateway's standard checks.

See http://www.maxmind.com for more information on how the service works and pricing.

Thresholds
MaxMind's service works by assigning each transaction a fraud score, with 0.0 being very low risk and 10.0 being the highest risk. Store admins must set several 'threshold' AppConfigs (explained below) to determine how the software should handle orders based on that score. The default values for those AppConfigs are simply recommendations based on information from MaxMind, store admins should feel free to adjust the values based on their business model and fraud rates.

Enabling MaxMind

1 - First, visit http://www.maxmind.com and register an account for the MaxMind services.

2 - Once you have your account information, go to the Site Configuration Wizard page and click the 'Configure Maxmind' link. In the window that opens, set the following values the way you want for your site:

AppConfig Name	Description
MaxMind.Enabled	Set this to true to enable the MaxMind service.
MaxMind.DelayDownloadThreshold	If your business sells downloadable products and sends the download emails automatically, the value in this AppConfig determines when the software will hold off on that email until a store admin can review the order.
MaxMind.DelayDropShipThreshold	If you use drop shipping, the value in this AppConfig determines when the software will hold off on sending the distributor email until a store admin can review the order.
MaxMind.FailScoreThreshold	The value in this AppConfig determines when the software will mark an order as fraud. Store admins can review these orders at Orders -> View Orders Marked as Fraud
MaxMind.LicenseKey	This key is obtained from MaxMind. The service will not work until this is populated.