Medido el 2026-07-11 · DNS público
¿Está 53.com protegido contra la suplantación de correo?
Sí — 53.com aplica DMARC (p=reject).
Postura sin cambios desde el 2026-06-19
Más protegido que el 76 % de bancos en Estados Unidos
El 80 % del sector ya aplica p=reject
A
DMARC
p=reject
SPF
-all
DKIM
3 selector(es)
Logo BIMI publicado — se muestra en los buzones compatibles
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=reject; sp=reject; fo=1; pct=100; ri=3600; rua=mailto:DMARC-Reports@53.com; ruf=mailto:DMARC-Reports@53.comQué significa esto
- • Politique p=reject : protection maximale contre l’usurpation.
- • Au moins une clé DKIM valide publiée.
Historial
- 2026-06-26Primera mediciónProtegido (p=reject)
Sobre Fifth Third Bank
Fifth Third Bank is a major financial institution operating in France under the domain 53.com. As a banking establishment, the bank manages a significant volume of electronic communications intended for its clients, employees, and business partners. Its email scope encompasses administrative correspondence, banking service notifications, security alerts, account statements, and institutional communications from its internal departments.
In the financial sector, securing the messaging domain represents a critical issue. Fifth Third Bank must prevent domain spoofing of 53.com, which is particularly sensitive given the trust clients place in official banking communications. Phishing attempts and identity theft pose major risks that could compromise the institution's reputation and customer data security.
As an entity in the regulated financial sector, Fifth Third Bank is subject to enhanced cybersecurity obligations, particularly under the NIS2 Directive and the DORA regulation (Digital Operational Resilience Act) applicable to critical enterprises. These regulatory frameworks mandate robust authentication of electronic communications and strict management of email domain-related risks.
Rigorous implementation of the DMARC protocol on 53.com, combined with SPF and DKIM mechanisms, enables Fifth Third Bank to validate the authenticity of its communications, detect spoofing attempts, and maintain user trust. This email authentication infrastructure constitutes a fundamental element of its cybersecurity and regulatory compliance strategy, protecting both institutional communications and customer interactions from malicious exploitation.