Measured 10/07/2026 · public DNS
Is lycee-chateaublanc.net protected against email spoofing?
Not yet — lycee-chateaublanc.net only monitors DMARC (p=none); spoofed mail can still be delivered.
Stronger than 70% of schools in France
1% of the sector already enforces p=reject
See the sector barometer →See the whole sector →
F
DMARC
p=none
SPF
~all
DKIM
none found
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Published record
v=DMARC1; p=none;What this means
- • Policy p=none: monitoring only, no unauthenticated message is blocked.
- • No rua address: aggregate reports are not collected, which makes steering the hardening impossible.
- • 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
09/13/202610/07/2026
- No DMARC
- Monitoring only (p=none)
- 10/07/2026DMARCMonitoring only (p=none)
- 09/13/2026First measurementNo DMARC
About Lycée polyvalent Château Blanc
The Lycée polyvalent Château Blanc is a public secondary education institution located in Châlette-sur-Loing, a commune in the Loiret department, in the Centre-Val de Loire region of France. Situated near Montargis, it belongs to the network of schools under the jurisdiction of the Orléans-Tours education authority and enrolls students primarily from the Montargis area and surrounding communes.
As a "lycée polyvalent," the institution is characterized by the diversity of educational pathways it offers, combining general, technological, and vocational education within a single structure. This organization allows students to follow a curriculum suited to their personal goals, whether preparing for a general, technological, or vocational baccalaureate, or pursuing additional post-secondary training. The school thus fulfills a public education mission, delivering instruction in accordance with national curricula set by the Ministry of Education, while providing pedagogical and educational support tailored to the diversity of student profiles it welcomes.
The Lycée Château Blanc holds a significant place in the local educational landscape, contributing to secondary education provision in the southern part of the Loiret department. Alongside other institutions in the region, it participates in the education of younger generations and their academic and professional integration, within a territory marked by diversified economic activity. The institution maintains relationships with local authorities, notably the Centre-Val de Loire region, which is responsible for the management of upper secondary schools, as well as with local socio-economic stakeholders in connection with certain vocational programs.
The website lycee-chateaublanc.net is the official website of the institution, presenting information regarding its organization, its educational programs, and school life.