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According to Live Direct Marketing's daily DNS scan (July 13, 2026), penguinrandomhouse.com (Tranco rank #4,046) receives mail via Mimecast. Its DMARC policy is p=quarantine — one of the minority (47%) of DMARC publishers that actually enforce.
| Mailbox provider (MX) | Mimecast |
|---|---|
| ESPs in SPF | none detected |
| SaaS senders in SPF | none detected |
| DMARC policy | p=quarantine |
| DMARC record | v=DMARC1; p=quarantine; pct=100; adkim=r; aspf=r; rua=mailto:dmarc_agg@vali.email,mailto:4065f1db5e3e741@rep.dmarcanalyzer.com,mailto:bb918c48@inbox.ondmarc.com; ruf=mailto:4065f1db5e3e741@for.dmarcanalyzer.com,mailto:bb918c48@inbox.ondmarc.com; fo=1; ri=""3600 |
| Tranco rank | #4,046 |
| Snapshot | 2026-07-13 (updated daily) |
penguinrandomhouse.com uses Mimecast for inbound mail (detected from its primary MX record) as of July 13, 2026, per Live Direct Marketing's daily Tranco top-1M scan.
Partially — penguinrandomhouse.com publishes p=quarantine (as of July 13, 2026).