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DNS Management

DNS basics​

DNS maps human-readable domains to service endpoints (web, mail, verification, and more).

Common records​

  • A: domain to IPv4
  • AAAA: domain to IPv6
  • CNAME: alias to another hostname
  • MX: mail routing
  • TXT: SPF, verification, and policy records

Point domain to hosting​

  1. Open DNS zone for domain.
  2. Set A record (@) to hosting IP.
  3. Set www as CNAME to root domain or A record.
  4. Wait for propagation.
  5. Verify via DNS lookup tools.

Safe DNS change practice​

  • Change one set of records at a time.
  • Keep old values documented before editing.
  • Validate mail records after web cutover.