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Email infrastructure of jst.go.jp

According to Live Direct Marketing's daily DNS scan (July 13, 2026), jst.go.jp (Tranco rank #4,618) receives mail via Microsoft 365 and sends through Cuenote, ActiveGate. Its DMARC policy is p=quarantine — one of the minority (47%) of DMARC publishers that actually enforce.

Mailbox provider (MX)Microsoft 365
ESPs in SPFCuenote, ActiveGate
SaaS senders in SPFnone detected
DMARC policyp=quarantine
DMARC recordv=DMARC1; p=quarantine; rua=mailto:dmarc-report-rua@jst.go.jp,mailto:dmarc_agg@vali.email
Tranco rank#4,618
Snapshot2026-07-13 (updated daily)

Frequently asked questions

What email provider does jst.go.jp use?

jst.go.jp 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.

What ESP does jst.go.jp use?

jst.go.jp authorises Cuenote, ActiveGate in its SPF record as of July 13, 2026.

Does jst.go.jp enforce DMARC?

Partially — jst.go.jp publishes p=quarantine (as of July 13, 2026).

DNS records say who should deliver your mail — they don't say whether it lands in the inbox. Run a free inbox placement test for jst.go.jp at Gmail, Outlook, Yandex and Mail.ru.
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