Domain.Glossary

Domain Glossary

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AAAA Record

A DNS record that maps a domain to an IPv6 address — the successor to the IPv4 A record.

intermediate

CNAME Record

A DNS record that creates an alias from one domain name to another.

intermediate

DKIM (DomainKeys Identified Mail)

An email authentication method using cryptographic signatures to verify email legitimacy.

intermediate

DNS Resolver

A server that performs recursive DNS lookups on behalf of client devices.

intermediate

MX Record

A DNS record that specifies which server handles email for a domain.

intermediate

SPF Record

A DNS record that authorizes specific servers to send email for a domain — prevents spoofing.

intermediate

TTL (Time to Live)

How long (in seconds) DNS resolvers should cache a record before refreshing it.

intermediate

TXT Record

A DNS record used for verification, email authentication (SPF/DKIM/DMARC), and other text data.

intermediate