To access the DNS settings for your domain, follow the How to Update/Manage DNS guide and then enter the Shopify specific DNS entries below.
1. First create the A record with the Shopify IP address:
Host Name | Record Type | Address | Priority |
@ | A (Address) | 22.227.38.32 |
2. Click 'Save Changes' to save the record and to add a new empty DNS record field.
3. Next create the CNAME record with your shop address:
Host Name | Record Type | Address | Priority |
www | CNAME (Alias) |
YourStore.myshopify.com. |
domain to the end of the address.
4. Click 'Save Changes' to save the record.
Shopify.com has also published information regarding this topic at: http://docs.shopify.com/manual/settings/domains/third-party-domains/general-instructions