Gemessen am 2026-07-04 · öffentliches DNS
Ist marcus.com gegen E-Mail-Spoofing geschützt?
Ja — marcus.com setzt DMARC durch (p=reject).
Haltung unverändert seit dem 2026-06-19
Stärker geschützt als 22 % der Banken in Vereinigte Staaten
80 % der Branche setzt bereits p=reject durch
A
DMARC
p=reject
SPF
~all
DKIM
keiner gefunden
BIMI + verifizierte Marke (VMC) — dein Logo, authentifiziert
So behebst du es
Thomas, der DMARC-Copilot, findet jede Quelle, schreibt das exakte DNS und bringt deine Domain sicher von p=none zu p=reject.
Veröffentlichter Eintrag
v=DMARC1; p=reject; rua=mailto:dmarc_rua@emaildefense.proofpoint.com,mailto:gs-dmarc-marcus-aggregate@marcus.com; ruf=mailto:dmarc_ruf@emaildefense.proofpoint.com,mailto:gs-dmarc-marcus-forensic@marcus.com; fo=1Was das bedeutet
- • Politique p=reject : protection maximale contre l’usurpation.
- • SPF se termine par ~all (softfail) : acceptable en phase d’observation, viser -all à terme.
- • Aucune clé DKIM trouvée sur les sélecteurs courants (le domaine peut utiliser des sélecteurs non standards).
Verlauf
- 2026-06-26Erste MessungGeschützt (p=reject)
Über Marcus
Marcus is a French organisation operating under the marcus.com domain. As an entity based in France, it manages a complex email ecosystem encompassing internal communications with its employees, exchanges via its digital services, and all official correspondence. These communication flows represent a critical vector of trust and legitimacy for the organisation.
Securing marcus.com through DMARC deployment is of paramount strategic importance in light of threats from identity spoofing and domain hijacking. Attackers routinely target organisational domains to conduct phishing campaigns, compromise institutional reputation, and gain access to sensitive data. For a French organisation, these risks are accompanied by increasingly stringent regulatory obligations, particularly through the NIS2 Directive and DORA regulation, which mandate enhanced cybersecurity measures and email authentication protocols.
Implementing a robust DMARC strategy for marcus.com enables the authentication of legitimate messages through SPF and DKIM mechanisms, while establishing clear policies for handling non-conformant emails. This protects both internal and external stakeholders against spoofing attempts, strengthens regulatory compliance, and reinforces overall cybersecurity governance.
The DMARC Observatory provides transparent monitoring of email authentication deployment for marcus.com, offering the organisation visibility into its security posture and opportunities for improvement in protecting critical communication channels. This visibility supports informed decision-making on email security infrastructure investments.