Measured 09/27/2026 · public DNS
Is mairie-chateaubriant.fr protected against email spoofing?
Not yet — mairie-chateaubriant.fr only monitors DMARC (p=none); spoofed mail can still be delivered.
Unchanged since 08/20/2026
Stronger than 36% of city halls in France
12% of the sector already enforces p=reject
See the sector barometer →See the whole sector →
F
DMARC
p=none
SPF
absent
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.
- • 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
- 08/20/2026First measurementMonitoring only (p=none)
About Châteaubriant
The Châteaubriant town hall is the municipal institution responsible for administering the commune of Châteaubriant, located in the Loire-Atlantique department, in the Pays de la Loire region of France. As a sub-prefecture of this department, the town lies near the border with historic Brittany, in a rural and wooded area in the northeastern part of the department. The town hall serves as the seat of the local executive, led by the mayor and the municipal council elected by residents, in accordance with the principles of French territorial organization.
Châteaubriant has a long history, marked by the presence of a medieval castle that gave the town its name and remains one of the main elements of its architectural heritage today. Over the centuries, the commune developed around this building as well as a historic center that retains buildings and streets reflecting its past. The town also experienced industrial and commercial development that helped shape its current urban fabric, while retaining the character of a medium-sized town within a predominantly rural territory.
As part of its responsibilities, the town hall manages local public services for residents, including civil registry matters, urban planning, social services, and the management of school, cultural, and sports facilities, as well as the maintenance of roads and public spaces. It also participates in local life by supporting associative, cultural, and economic initiatives within the commune. It further collaborates with intercommunal structures and other local authorities in implementing public policies related to territorial planning and local development.
The website mairie-chateaubriant.fr is the official website of the commune, providing practical information on administrative procedures, municipal services, and local life.