Measured 10/07/2026 · public DNS
Is lycee-chateaubriand.fr protected against email spoofing?
No — lycee-chateaubriand.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-chateaubriand.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 Chateaubriand
Lycée Chateaubriand is a public secondary education institution located in Rennes, in the Ille-et-Vilaine department of Brittany, France. Named after the writer François-René de Chateaubriand, a native of the region, it stands as one of the historic educational establishments in the city, enrolling students at the secondary level within the French national education system. Its location, in or near the urban center of Rennes, makes it a recognizable institution for families and students in the metropolitan area.
The school offers general and technological education leading to the baccalauréat, as well as, depending on available tracks, preparatory classes for competitive entrance to higher education institutions, intended for graduates pursuing demanding academic paths. It operates under the French Ministry of Education, under the supervision of the Rennes academic authority, following national curricula and standards while developing pedagogical projects specific to its history and local context. The school thus contributes to the education of a student body drawn mainly from Rennes and its surrounding area.
Beyond its teaching mission, the institution plays a role in the local educational and cultural life, maintaining connections with other schools, associations, and cultural institutions in the Rennes region. Its heritage link to Chateaubriand contributes to its identity and recognition within the Breton educational landscape. The school operates according to the principles of free access and secularism characteristic of the French public education service, welcoming a new cohort of students each year in line with the national school calendar.
The website lycee-chateaubriand.fr is the institution's official site, presenting information about its organization, academic tracks, and pedagogical and administrative news, along with resources intended for students, families, and staff.