THIS APPLIES ONLY TO ZEN CART v1.5.1 AND OLDER, and only when using the Linkpoint-API module.

FYI ... If you're using GoDaddy hosting and want to use First Data's Linkpoint API as your payment gateway, you will have to upgrade to one of GoDaddy's more expensive "Virtual Hosting" or "Dedicated Hosting" packages.

Why?
LinkPoint needs to use cURL on port 1129.
On GoDaddy's "Shared Hosting" package, only ports 80, 8080, 443 are available via cURL.

If you upgrade to one of their Virtual/Dedicated packages, port 1129 is automatically available for you.


Or ... you could switch to another hosting company



[Information confirmed today from Rob at GoDaddy's Expert Hands Hosting Support Team]