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According to Live Direct Marketing's daily DNS scan (July 13, 2026), claude.ai (Tranco rank #906) publishes no classifiable email DNS records. Its DMARC policy is p=reject — one of the minority (47%) of DMARC publishers that actually enforce.
| Mailbox provider (MX) | no MX / not classified |
|---|---|
| ESPs in SPF | none detected |
| SaaS senders in SPF | none detected |
| DMARC policy | p=reject |
| DMARC record | v=DMARC1; p=reject; rua=mailto:77e00ffe8c9a4e58815efcec52c89399@dmarc-reports.cloudflare.net; fo=1 |
| Tranco rank | #906 |
| Snapshot | 2026-07-13 (updated daily) |
claude.ai has no classifiable MX record as of July 13, 2026, per Live Direct Marketing's daily Tranco top-1M scan.
Yes — claude.ai publishes p=reject, the strictest DMARC policy (as of July 13, 2026).