What are DNS records?DNS records are used to direct domains to IP addresses, each record type have their own capabilities.TypesA -This record communicates what IP address is used with a domain name or subdomain.NAME TYPE VALUE -------------------------------------------------- foo.example.com. A 198.181.125.248 Once inputted accessing foo.example.com will direct to 198.181.125.248 This is only compatible with IPv4 AAAA – This record is exactly the same as an A record but uses IPv6. CNAME – This record is similar to an A record; the difference is it is mainly used when you do not have an IP to use. CNAMEs use domain names to map the domain across. NAME TYPE VALUE -------------------------------------------------- bar.example.com. CNAME foo.example.com. The above example shows that bar.example.com will direct to foo.example.com Also known as Canonical Name MX – This record is used to route mail to their mail servers using IPs. Priority is used to specify the order of the records normally formatted in variables of 5. NAME TYPE PRIORITY VALUE ----------------------------------------------------------- mx.example.com. MX 5 mailserver.com. TXT – This record is mainly used for authentication purposes, normally a long string of text is used to authenticate web programmes and services. NAME TYPE VALUE ------------------------------------------------------------ example.com. TXT google-site-verification=wwi34n45bh@SPF – This is a type of TXT record which is used to verify that mail should be sent from the IP or server it lists. This is used to help defeat spoofing as it can verify the where it is coming from. NAME TYPE VALUE ------------------------------------------------------------ example.com. TXT v=spf1 mx:example.com -all There are multiple parts of an SPF record:
PTR – Used to confirm that the domain is connected to the IP it lists. Ideally used for outgoing mail servers as mail providers are less likely to reject mail servers with validated PTR records. NAME TYPE VALUE -------------------------------------------------- 1.0.168.192.in-addr.arpa PTR example.com.Also known as Reverse DNS | |||||||||||||||
- DNS
- 0 Користувачі, які знайшли це корисним
