Create catch all and DNS records

General information for the business: International business with multiple country subdomains Description of requirements/functionality: NOTE: Answer all interview questions attached. Any proposals without these will be deleted. We need either a new component creating for an Ubuntu or centos linux server or customising existing functionality such as BIND. Create a catch all and a DNS record that can handle email for multiple subdomains. Because of quite a few international subdomains we need to handle a few levels of wildcard for the subdomains. The incoming mail will then be routed to a location on the server to be processed. Example: *@*.*.domain.com - catch all 2 wildcard subdomains *@*.*.*.domain.com - catch all 3 wildcard subdomains Specific technologies required: linux server, DNS, email OS requirements: Linux Extra notes: