Measured 2026-08-20 · public DNS
Is arpajon91.fr protected against email spoofing?
No — arpajon91.fr has no DMARC policy and can be spoofed.
Stronger than 32% of city halls in France
12% of the sector already enforces p=reject
See the sector barometer →See the whole sector →
F
DMARC
absent
SPF
-all
DKIM
1 selector(s)
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What this means
- • No DMARC record published (_dmarc). Receivers have no policy to apply.
- • 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. (default : 1024 bits)
- • DKIM key in test mode (t=y): remove the flag once the signature is validated in production. (default)
- • 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
- 2026-08-20First measurementNo DMARC
About Arpajon
The Mairie d'Arpajon is the municipal administration of the commune of Arpajon, located in the Essonne department, in the Île-de-France region of France. As the seat of a canton, the commune lies south of Paris, in the Orge valley, close to other communes in the southern Paris area. It serves as the local administrative body responsible for managing municipal affairs and implementing public policies at the communal level.
Arpajon has a long history linked to its status as a market town, developed notably around its market and historic covered hall, elements that have shaped its urban identity and its role as a regional trading centre. Over the centuries, the locality underwent various administrative changes, gradually evolving from a simple market town into a structured commune with its own municipal institutions. The urban fabric still bears traces of this past, with a historic town centre organised around the hall and its squares.
Today, the town hall carries out the traditional responsibilities assigned to French municipal authorities: civil registry, urban planning, management of public facilities, social action, education, culture and community life. It operates within the intercommunal framework of the territory, cooperating with intercommunal structures in southern Essonne, thus taking part in shared projects and services for residents of the wider living area. The commune retains a central role for surrounding localities, notably due to the presence of shops, public services and collective facilities.
The website arpajon91.fr is the official institutional site of the commune of Arpajon, providing practical information on municipal life, administrative procedures and services offered to residents.