How can blocking dynamic IP addresses prevent legitimate orders?
|Note: Yahoo provides the IP address blocking feature as is and without warranty of any kind to AT&T Yahoo Merchant Solutions and Store merchants to be used at the merchants' discretion. Merchants should carefully review the Reverse DNS Lookup information provided before blocking any IP address, as IP addresses may be dynamically assigned to users by certain Internet Service Providers possibly blocking legitimate buyers and not ensuring the fraudster is blocked from ordering. Also, as IP addresses may be falsified, merchants are advised to use AVS and CVV responses to determine which orders to approve, reject, or follow up with the issuing bank.|
retrieved from yahoo website