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According to Live Direct Marketing's daily DNS scan (July 12, 2026), windowsupdate.com (Tranco rank #61) 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; pct=100; rua=mailto:rua@dmarc.microsoft; ruf=mailto:ruf@dmarc.microsoft; fo=1 |
| Tranco rank | #61 |
| Snapshot | 2026-07-12 (updated daily) |
windowsupdate.com has no classifiable MX record as of July 12, 2026, per Live Direct Marketing's daily Tranco top-1M scan.
Yes — windowsupdate.com publishes p=reject, the strictest DMARC policy (as of July 12, 2026).