Medido el 2026-07-11 · DNS público
¿Está cergy.fr protegido contra la suplantación de correo?
Todavía no — cergy.fr solo observa (p=none); el correo suplantado aún puede entregarse.
Postura sin cambios desde el 2026-06-19
Más protegido que el 55 % de ayuntamientos en Francia
El 12 % del sector ya aplica p=reject
D
DMARC
p=none
SPF
-all
DKIM
3 selector(es)
Cómo corregirlo
Thomas, tu CISO virtual con IA, identifica cada fuente, escribe el DNS exacto y lleva tu dominio de p=none a p=reject con total seguridad.
Registro publicado
v=DMARC1; p=none; sp=none; rua=mailto:dmarc@mailinblue.com!10m,mailto:7wuz35pk@rua.eu.dmarcmanager.app; ruf=mailto:dmarc@mailinblue.com!10m; rf=afrf; pct=100; ri=86400Qué significa esto
- • Politique p=none : surveillance seule, aucun message non authentifié n'est bloqué.
- • Au moins une clé DKIM valide publiée.
Historial
- 2026-06-26Primera mediciónSolo observación (p=none)
Sobre Cergy
Cergy, a dynamic French municipality in the Yvelines department (Île-de-France), serves as a major administrative and urban center. As a local public organization, the Cergy municipality manages a broad ecosystem of digital communications encompassing citizen interactions, inter-departmental exchanges, administrative notifications, and institutional communications through the cergy.fr domain.
Securing this domain carries critical importance. Local public organizations are prime targets for phishing campaigns and domain impersonation attacks, exploiting the trust citizens place in municipal communications. Domain spoofing of cergy.fr could facilitate electoral fraud, public fund embezzlement, or breaches of administrative data integrity.
Within this framework, implementing a robust DMARC strategy becomes fundamental to digital governance. DMARC (Domain-based Message Authentication, Reporting and Conformance) strengthens email authentication through SPF and DKIM mechanisms, preventing cergy.fr impersonation while providing comprehensive visibility over legitimate and malicious email flows.
While regulatory obligations such as NIS2 (revised Directive on Network and Information System Security) primarily target essential service operators, local authorities must adopt equivalent security hygiene standards, particularly in securing communication channels. For an organization like Cergy, robust email authentication constitutes a cornerstone of citizen data protection and institutional trust maintenance. The Observatory DMARC provides organizations like Cergy with insights into their email authentication posture, supporting compliance with evolving cybersecurity requirements and best practices in the public sector.