# DNS

Domain Name System (DNS) is a public resource of information about a domain that only the domain owner can edit. The DNS holds relevant details for sending email on behalf of a domain, such as [SPF](https://www.getresponse.com/help/spf.html), [DKIM](https://www.getresponse.com/help/dkim.html), and [DMARC](https://www.getresponse.com/help/dmarc.html) policy records.