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According to Live Direct Marketing's daily DNS scan (July 13, 2026), marriott.com (Tranco rank #727) receives mail via Microsoft 365 and sends through Zendesk. 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 | Zendesk |
| SaaS senders in SPF | Givex |
| DMARC policy | p=reject |
| DMARC record | v=DMARC1; p=reject; pct=100; sp=reject; rua=mailto:ts2wfbhi@ag.dmarcian.com; ruf=mailto:ts2wfbhi@fr.dmarcian.com; |
| Tranco rank | #727 |
| Snapshot | 2026-07-13 (updated daily) |
marriott.com 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.
marriott.com authorises Zendesk in its SPF record as of July 13, 2026.
Yes — marriott.com publishes p=reject, the strictest DMARC policy (as of July 13, 2026).