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According to Live Direct Marketing's daily DNS scan (July 12, 2026), ultradns.com (Tranco rank #1,176) receives mail via Microsoft 365 and sends through Marketo (Adobe), Amazon SES, Zoho Mail 360. 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 | Marketo (Adobe), Amazon SES, Zoho Mail 360, Zendesk |
| SaaS senders in SPF | none detected |
| DMARC policy | p=reject |
| DMARC record | v=DMARC1; p=reject; rua=mailto:aggregate@ultradns.com; ruf=mailto:forensic@ultradns.com; sp=reject |
| Tranco rank | #1,176 |
| Snapshot | 2026-07-12 (updated daily) |
ultradns.com uses Microsoft 365 for inbound mail (detected from its primary MX record) as of July 12, 2026, per Live Direct Marketing's daily Tranco top-1M scan.
ultradns.com authorises Marketo (Adobe), Amazon SES, Zoho Mail 360, Zendesk in its SPF record as of July 12, 2026.
Yes — ultradns.com publishes p=reject, the strictest DMARC policy (as of July 12, 2026).