Configure the ResellerClub Registrar
Setting up WHMCS with domain registration is simple and another great way to increase revenue. For this example, we will be using a free ResellerClub account.
First, navigate to Setup > Products/Services > Domain Registrars
Click the Activate button for the registrar you wish to use.
Upon clicking Activate, the page will reload and you will be able to input the data necessary to authenticate with the registrar's system.
Obtaining the Reseller ID and API Key
In order to utilize the ResellerClub registrar, you must have a valid Reseller ID and API Key. If you have not already, signup for a ResellerClub account here.
Firstly, login to the ResellerClub website here: https://freeaccount.myorderbox.com/
Once logged in, click on the Silhouette icon. Your Reseller ID is displayed in the menu which appears
Next, navigate to Settings > API
On the next screen, choose View API Key. A window will pop up containing your API Key.
Be sure to write down your Reseller ID and API Key. We will use these in just a minute
Return to WHMCS and insert your Reseller ID and API Key into the corresponding fields:
After filling the appropriate boxes out, click on Save Changes.
In order to use the ResellerClub API, you must next register your server IP address (the server IP address where WHMCS is installed). This is a security measure employed by ResellerClub to prevent unauthorised users from submitting registration requests to your account.
In the ResellerClub control panel, navigate to Settings > API
In the Whitelist your IP Addresses section, type in the IP addresses your server uses.
Click Save whitelisted IP addresses.
The setup is completed and you are now ready to begin using WHMCS and ResellerClub to sell domain registration!