Redirect external domain to a domain on cPanel without defining it on cPanel

Hi I am looking to make a redirection for multiple domains (not hosted on my CPANEL) to be redirected to a domain on cpanel like subdomain.extDomain.com will be redirected to interDomain.com where interDomain.com is defined on cpanel but the extdomain.com is not defined on cpanel. can i do that with cname record to be added to the extDomain or any other kind of DNS records? also can cpanel to detect such external domains redirects specially they are going to be big number (i can't define them one by one to the cpanel)