← Look up another domain · Email Stats home
According to Live Direct Marketing's daily DNS scan (July 13, 2026), heritage.org (Tranco rank #9,263) receives mail via Microsoft 365 and sends through Exclaimer (signatures), Zendesk, Marketo (Adobe). Its DMARC policy is p=reject — one of the minority (47%) of DMARC publishers that actually enforce.
| Mailbox provider (MX) | Microsoft 365 |
|---|---|
| ESPs in SPF | Exclaimer (signatures), Zendesk, Marketo (Adobe) |
| SaaS senders in SPF | KnowBe4, UKG / UltiPro |
| DMARC policy | p=reject |
| DMARC record | v=DMARC1; p=reject; aspf=r; adkim=r; pct=100; rua=mailto:dmarc.heritage.org |
| Tranco rank | #9,263 |
| Snapshot | 2026-07-13 (updated daily) |
heritage.org uses Microsoft 365 for inbound mail (detected from its primary MX record) as of July 13, 2026, per Live Direct Marketing's daily Tranco top-1M scan.
heritage.org authorises Exclaimer (signatures), Zendesk, Marketo (Adobe) in its SPF record as of July 13, 2026.
Yes — heritage.org publishes p=reject, the strictest DMARC policy (as of July 13, 2026).