How to solve domain not mapped correctly

Hi, I already set my domain mapping as instruct but seems it not work correctly.

One of my test domain not mapped to it always pointed to default cgi page.

1. Installed multisite in subdomain (using share IP)
2. Mapped domain using CName on registrar domain mapping (namecheap)
3. Already tried to delete result still same
define('DOMAIN_CURRENT_SITE', '');
define('PATH_CURRENT_SITE', '/');
define('SITE_ID_CURRENT_SITE', 1);
define('BLOG_ID_CURRENT_SITE', 1);
4. Also tried to delete Server IP Address on domain mapping plugin setting result also same

how to resolve it?

Thanks in advance,