Measured 2026-08-24 · public DNS
Is collegediderot.fr protected against email spoofing?
No — collegediderot.fr has no DMARC policy and can be spoofed.
Stronger than 0% of schools in France
0% of the sector already enforces p=reject
See the sector barometer →See the whole sector →
F
DMARC
absent
SPF
absent
DKIM
none found
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What this means
- • No DMARC record published (_dmarc.<domain>). Receivers have no policy to apply.
- • No SPF record (v=spf1) published on the domain.
- • 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
- 2026-08-24First measurementNo DMARC
About Collège Denis Diderot
Collège Denis Diderot is a public secondary school located in Aubervilliers, a town in the Seine-Saint-Denis department, in the Île-de-France region of France. Named after the French philosopher and encyclopedist Denis Diderot, a major figure of the Enlightenment, the institution enrolls students in the lower secondary cycle, corresponding to the first four years of secondary education, within the French national education system. Like other public collèges in the area, it falls under the Créteil education authority (académie) and is part of the network of schools serving the population of Aubervilliers and its surrounding area.
The school's location in Aubervilliers reflects the particular urban and demographic context of this town in the northern suburbs of Paris, historically characterized by strong social and cultural diversity. The institution thus contributes to the local educational offer, alongside other primary and secondary schools present within the municipal territory. Its scope of activity covers teaching the core subjects of the French lower secondary curriculum, as well as, depending on the programs implemented, additional courses or specific educational initiatives designed to support students' schooling.
Collège Denis Diderot carries out the missions traditionally assigned to a public secondary institution: instruction, socialization, and preparation of students for further studies, notably through obtaining the national diploma awarded at the end of lower secondary education and guidance toward upper secondary school tracks. It operates within the pedagogical guidelines set at the national and regional levels, while also developing, like many institutions in its environment, partnerships and projects specific to its local context. Its position within the educational landscape of Aubervilliers makes it one of the relays of public educational action in this area.
The website collegediderot.fr is the institution's official site, presenting general information about its organization, school life, and news.