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Email infrastructure of mdr.de

According to Live Direct Marketing's daily DNS scan (July 12, 2026), mdr.de (Tranco rank #6,579) receives mail via Microsoft 365 and sends through Mailjet (Sinch), Constant Contact. 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 SPFMailjet (Sinch), Constant Contact
SaaS senders in SPFUmantis (Haufe HR)
DMARC policyp=none
DMARC recordv=DMARC1; p=none; rua=mailto:dmarc-reports@mdr.de; pct=100; sp=none; aspf=r; adkim=r
Tranco rank#6,579
Snapshot2026-07-12 (updated daily)

Frequently asked questions

What email provider does mdr.de use?

mdr.de uses Microsoft 365 for inbound mail (detected from its primary MX record) as of July 12, 2026, per Live Direct Marketing's daily Tranco top-1M scan.

What ESP does mdr.de use?

mdr.de authorises Mailjet (Sinch), Constant Contact in its SPF record as of July 12, 2026.

Does mdr.de enforce DMARC?

No — mdr.de publishes p=none, which only monitors and does not block spoofing (as of July 12, 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 mdr.de at Gmail, Outlook, Yandex and Mail.ru.
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