# Web hosting

SPF

DKIM1

DMARC

DNS

MX

Domain forwarding

DNSSEC

DNS Domain Name System

Each device connected to the internet has an IP address. Websites are in fact hosted on a computer (server) and are addressed by their addressses. Of course we don’t type in numbers to get to google or anywhere for that matter. We type names. We owe our thanks to DNS servers to keep track of each website name and its corresponding IP address. 

DNS Records → simple text files that include instructions for DNS servers

A record → stores the IP address of the domain (A for Address)

CNAME → 'canonical name' record used in lieu of an A record, when a domain or subdomain is an alias of another domain.