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According to Live Direct Marketing's daily DNS scan (July 25, 2026), dentonisd.org (Tranco rank #106,651) receives mail via Mimecast and sends through Mimecast. Its observed DMARC policy is p=none (monitoring). Policy alone does not establish inbox or spam placement.
Last updated: .
| Mailbox provider (MX) | Mimecast |
|---|---|
| ESPs in SPF | Mimecast |
| SaaS senders in SPF | SchoolMessenger |
| DMARC policy | p=none |
| DMARC record | v=DMARC1; p=none; rua=mailto:5aab2bf5d5c2713@rep.dmarcanalyzer.com; ruf=mailto:5aab2bf5d5c2713@for.dmarcanalyzer.com; fo=1; |
| Tranco rank | #106,651 |
| Snapshot | 2026-07-25 (updated daily) |
MX identifies the observed inbound mailbox or gateway. SPF includes identify services authorised to send for the domain. DMARC shows the published authentication policy. The dataset currently contains 4 populated signal groups for this page.
Observed deliverability context: based on the available observations, this page describes DNS configuration only. It does not represent a complete audit of dentonisd.org and does not prove that a particular message reaches the inbox or spam folder.
dentonisd.org uses Mimecast for inbound mail (detected from its primary MX record) as of July 25, 2026, per Live Direct Marketing's daily Tranco top-1M scan.
dentonisd.org authorises Mimecast in its SPF record as of July 25, 2026.
No — dentonisd.org publishes p=none, which only monitors and does not block spoofing (as of July 25, 2026).
Same daily dataset, three views: how its mailbox provider is trending, how strict DMARC is at its position in the list, and where its own policy sits among all DMARC publishers in the dataset.
The two ways an SPF record silently stops working. Counted from the published record; include chains are resolved one level deep, so the lookup count is a lower bound.
Adoption of the records that go beyond SPF and DMARC. Shown for the whole snapshot — per-domain detail lives on the security posture report.
The MX hostname resolved to its addresses, and those addresses resolved back. Missing or mismatched reverse DNS is one of the few DNS-visible causes of outright rejection.
usb-smtp-inbound-1.mimecast.com has a PTR record matching its own zone.170.10.150.242 also hosts 1 other mail hosts — a shared server, so reputation is shared too.The same snapshot cut by zone, by list position and by how alive the published policies are.
-all SPF and a DMARC record that enforces nothing — the sending side is locked down while the policy side is not.Nearby domains in the Tranco ranking: hondapartsnow.com · kumon.ne.jp · glssp.net · moslenta.ru
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