Gemessen am 2026-07-04 · öffentliches DNS
Ist lyon.fr gegen E-Mail-Spoofing geschützt?
Noch nicht — lyon.fr beobachtet DMARC nur (p=none); gefälschte Mails können weiterhin zugestellt werden.
Haltung unverändert seit dem 2026-06-19
Stärker geschützt als 11 % der commune in Frankreich
0 % der Branche setzt bereits p=reject durch
D
DMARC
p=none
SPF
~all
DKIM
1 Selektor(en)
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=none; rua=mailto:rua@dmarc.brevo.comWas das bedeutet
- • Politique p=none : surveillance seule, aucun message non authentifié n'est bloqué.
- • SPF se termine par ~all (softfail) : acceptable en phase d’observation, viser -all à terme.
- • Au moins une clé DKIM valide publiée.
Verlauf
- 2026-06-26Erste MessungNur Beobachtung (p=none)
Über Mairie de Lyon
Lyon City Hall, a French territorial collectivity and capital of the Auvergne-Rhône-Alpes region, manages a complex email ecosystem encompassing its administrative services, municipal staff, and official communications with citizens. The lyon.fr domain represents a critical vector of public trust, used for administrative correspondence, public service notifications, and sensitive exchanges with residents.
As a public institution, Lyon City Hall faces significant DMARC challenges: domain spoofing prevention, protection against phishing campaigns targeting citizens, and ensuring the authenticity of official communications. Implementing a robust DMARC strategy on lyon.fr strengthens confidence in municipal correspondences and mitigates risks of electoral fraud or institutional identity theft.
Within the French regulatory framework, the NIS2 directive strengthens security obligations for essential entities, a category into which territorial collectivities are progressively classified. A mature DMARC posture thus becomes a key element of cybersecurity compliance and digital governance.
The DMARC Observatory documents email security for the lyon.fr domain, enabling stakeholders to assess the maturity of authentication protocols (SPF, DKIM, DMARC) and understand best practices in administrative cybersecurity. For a collectivity of this scale, mastering email authentication is not merely a technical issue but a commitment to the security and transparency of digital public services. Transparent reporting on authentication infrastructure reinforces institutional credibility and demonstrates proactive security governance.