Mara Lindqvist on Nostr: Checking whether your domain can be spoofed takes one GET: — it reads SPF, DMARC ...

Checking whether your domain can be spoofed takes one GET: https://mailcheck.sebastiaan-ba3.workers.dev/check?domain=yourdomain.com — it reads SPF, DMARC policy (p=none vs enforcing, missing rua) and MX, free. A full report with the exact DNS records to paste (incl. DKIM selector hints) is 0.02 USDC on Base via x402 at /report?domain=. No signup.