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According to Live Direct Marketing's daily DNS scan (July 13, 2026), ahajournals.org (Tranco rank #4,180) 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;""sp=reject;""fo=1;""rua=mailto:dmarc_rua@emaildefense.proofpoint.com;""ruf=mailto:dmarc_ruf@emaildefense.proofpoint.com |
| Tranco rank | #4,180 |
| Snapshot | 2026-07-13 (updated daily) |
ahajournals.org has no classifiable MX record as of July 13, 2026, per Live Direct Marketing's daily Tranco top-1M scan.
Yes — ahajournals.org publishes p=reject, the strictest DMARC policy (as of July 13, 2026).