SenderGuard

Provider setup wizard

Pick your ESP and DNS provider to see exact steps and record mappings.

  1. SendGrid → Settings → Sender Authentication → Domain Authentication
  2. Choose your domain and generate DNS records (DKIM CNAMEs, return-path CNAME)
  3. Cloudflare DNS → Add records: use CNAME for DKIM selectors when instructed; TXT for DMARC/SPF
  4. Name mapping: selector._domainkey.<domain> (for DKIM TXT) or selector._domainkey CNAME → provider
  5. DMARC: _dmarc.<domain> TXT → v=DMARC1; p=none|quarantine|reject; rua=mailto:...
  6. SPF: <domain> TXT → v=spf1 include:<esp> -all (flatten if >10 lookups)

Hint: CNAME vs TXT depends on ESP; Cloudflare often uses CNAME for DKIM selectors and TXT for DMARC/SPF.