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According to Live Direct Marketing's daily DNS scan (July 13, 2026), liebertpub.com (Tranco rank #5,752) receives mail via Microsoft 365 and sends through Mimecast. Its DMARC policy is p=none (monitor only) — like the majority of DMARC publishers (53% don't enforce).
| Mailbox provider (MX) | Microsoft 365 |
|---|---|
| ESPs in SPF | Mimecast |
| SaaS senders in SPF | none detected |
| DMARC policy | p=none |
| DMARC record | v=DMARC1; p=none; rua=mailto:dmarc@liebertpub.com; ruf=mailto:dmarc@liebertpub.com; fo=1; |
| Tranco rank | #5,752 |
| Snapshot | 2026-07-13 (updated daily) |
liebertpub.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.
liebertpub.com authorises Mimecast in its SPF record as of July 13, 2026.
No — liebertpub.com publishes p=none, which only monitors and does not block spoofing (as of July 13, 2026).