Measured 10/06/2026 · public DNS
Is lycee-alfredcostes.fr protected against email spoofing?
No — lycee-alfredcostes.fr has no DMARC policy and can be spoofed.
Unchanged since 09/13/2026
Lowest posture among schools in France
1% of the sector already enforces p=reject
See the sector barometer →See the whole sector →
F
DMARC
absent
SPF
~all
DKIM
none found
Watch this domain for free
No time to create an account? Leave your email: you’ll be notified if the DMARC configuration of lycee-alfredcostes.fr changes (a regression, or a domain still left unprotected).
How to fix it
Thomas, your AI-powered virtual CISO, finds every sender, writes the exact DNS, and walks your domain safely from p=none to p=reject.
What this means
- • No DMARC record published (_dmarc). Receivers have no policy to apply.
- • SPF ends with ~all (softfail): acceptable while observing, aim for -all in the end.
- • No DKIM key found on the common selectors (the domain may use non-standard selectors).
- • No MTA-STS (_mta-sts): inbound SMTP connections remain exposed to TLS downgrade. Recommended alongside DMARC.
- • No TLS-RPT (_smtp._tls): the TLS failures encountered by senders are not reported.
History
- 09/13/2026First measurementNo DMARC
About Lycée professionnel Alfred Costes
The Lycée professionnel Alfred Costes is a public secondary education institution located in Bobigny, in the Seine-Saint-Denis department of France. It bears the name of Alfred Costes, a French aviator recognized for his achievements in the history of aeronautics, a choice reflecting the historical orientation of certain training programs offered by the school. The institution falls under the French Ministry of National Education and is part of the network of public schools within the Île-de-France regional education authority.
Located in the heart of Bobigny, the administrative center of the Seine-Saint-Denis department, the school welcomes students mainly from the local catchment area and surrounding municipalities. Its position in a densely urban zone, close to regional transport infrastructure, facilitates access for families and students in training. The school is part of a diverse educational network that includes other public and private secondary institutions in the department.
As a vocational lycée, the institution offers programs leading to vocational education diplomas, such as the Certificat d'Aptitude Professionnelle (CAP) or the vocational baccalaureate, in technical and industrial fields. It thus participates in the public service mission of education by providing initial training pathways intended to prepare students for professional integration or further short-cycle higher education. The institution also contributes, at its level, to the educational and social life of the Bobigny area, in coordination with other local and academic institutional actors.
The website lycee-alfredcostes.fr is the official website of the institution, presenting its training programs, news, and practical information for students, families, and partners.