Measured 09/20/2026 · public DNS
Is croissy.com protected against email spoofing?
Partially — croissy.com quarantines unauthenticated mail (p=quarantine).
Unchanged since 08/20/2026
Stronger than 80% of city halls in France
12% of the sector already enforces p=reject
See the sector barometer →See the whole sector →
B
DMARC
p=quarantine
SPF
~all
DKIM
1 selector(s)
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Published record
v=DMARC1; p=quarantine; rua=mailto:administrateur@croissy.com; ruf=mailto:administrateur@croissy.com; sp=quarantine; adkim=s; aspf=s;What this means
- • Policy p=quarantine: unaligned messages are moved to the spam folder.
- • SPF ends with ~all (softfail): acceptable while observing, aim for -all in the end.
- • At least one valid DKIM key published.
- • 1024-bit DKIM RSA key: still tolerated but below the state of the art — rotate to 2048 bits. (s1 : 1024 bits)
- • 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 measurementEnforcing (p=quarantine)
About Croissy-sur-Seine
The Mairie de Croissy-sur-Seine is the municipal administration of the commune of Croissy-sur-Seine, located in the Yvelines department, in the Île-de-France region of France. Situated on a bend of the Seine near the forest of Saint-Germain-en-Laye, the commune forms part of the Paris metropolitan area while retaining a residential character shaped by its history and natural surroundings. The mairie serves as the seat of local executive authority, headed by the mayor and the municipal council, both elected by direct universal suffrage for a six-year term.
As a basic local government unit, the commune of Croissy-sur-Seine exercises the powers granted to French municipalities under the General Code of Local Authorities. These include managing civil status records, organizing elections, issuing administrative documents, and maintaining local roads and public spaces. The commune is also involved in local urban planning, social welfare, early childhood services, primary and after-school education, as well as the management of sports and cultural facilities within its territory.
The commune further participates in intermunicipal cooperation structures, through which certain responsibilities, such as territorial planning or waste management, may be exercised jointly with neighboring municipalities. Municipal action thus combines local governance with coordination alongside higher administrative levels, notably the Yvelines department and the Île-de-France region, in accordance with the principle of local self-administration.
The website croissy.com is the official website of the Mairie de Croissy-sur-Seine, providing municipal information, administrative procedures, and news related to life in the commune.