DNS
DNS Security: SPF, DMARC, and CAA Records
Learn how to configure SPF, DMARC, and CAA DNS records to secure your domain.
DNS records play a crucial role in email security and domain protection.
SPF (Sender Policy Framework)
TXT record: v=spf1 include:_spf.google.com ~all
DMARC
TXT record on _dmarc.yourdomain.com: v=DMARC1; p=quarantine; rua=mailto:[email protected]
CAA (Certificate Authority Authorization)
Limits which CAs can issue certificates for your domain. Example: yourdomain.com. CAA 0 issue "letsencrypt.org"