DNS Records

DNS records in email marketing are configuration entries that verify sending identity and improve inbox trust. The most important are SPF, DKIM, and DMARC, which help receiving servers validate whether your domain is authorized and whether message signatures are intact. Correct DNS setup reduces spoofing risk, improves deliverability stability, and protects sender reputation during scale. Misconfigured records can cause authentication failures, spam folder placement, or outright rejection of legitimate campaigns. Teams should treat DNS as a shared responsibility between marketing operations and technical owners, with documented policies for key rotation, subdomain strategy, and monitoring. As sending volume grows, DNS hygiene becomes a foundational control for reliable lifecycle communication and campaign performance.