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Email infrastructure of clinicaltrials.gov

According to Live Direct Marketing's daily DNS scan (July 13, 2026), clinicaltrials.gov (Tranco rank #3,857) receives mail via Unknown / Other. Its DMARC policy is p=reject — one of the minority (47%) of DMARC publishers that actually enforce.

Mailbox provider (MX)Unknown / Other
ESPs in SPFnone detected
SaaS senders in SPFnone detected
DMARC policyp=reject
DMARC recordv=DMARC1; p=reject; rua=mailto:8idhoybh@ag.us.dmarcian.com,mailto:reports@dmarc.cyber.dhs.gov; ruf=mailto:8idhoybh@fr.us.dmarcian.com; fo=1;
Tranco rank#3,857
Snapshot2026-07-13 (updated daily)

Frequently asked questions

What email provider does clinicaltrials.gov use?

clinicaltrials.gov uses Unknown / Other for inbound mail (detected from its primary MX record) as of July 13, 2026, per Live Direct Marketing's daily Tranco top-1M scan.

Does clinicaltrials.gov enforce DMARC?

Yes — clinicaltrials.gov publishes p=reject, the strictest DMARC policy (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 clinicaltrials.gov at Gmail, Outlook, Yandex and Mail.ru.
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