Le champs SPF est un champs important pour la délivrabilité de vos e-mails. Mal configuré, absent, cela peut vous occasionner des rejets de réception des e-mails que vous envoyez à vos correspondants. Un autre champs TXT important est la signature DKIM qui jour également, énormément, en faveur de la délivrabilité des vos e-mails
Plus généralement, le SPF, ou Sender Policy Framework, est un système de vérification conçu pour empêcher l'usurpation d'adresse électronique en validant l'expéditeur d'un e-mail. Lorsqu'un domaine met en place un enregistrement SPF, il spécifie quels serveurs de messagerie sont autorisés à envoyer des e-mails. Lorsqu'un e-mail est reçu, le serveur de réception peut vérifier cet enregistrement pour s'assurer que l'e-mail provient d'un serveur des serveurs autorisés. Si ce n'est pas le cas, il peut être marqué comme suspect ou rejeté, ce qui aide à réduire le spam et le phishing en vérifiant que les e-mails proviennent bien de la source autorisés.
Domain Name: cornerstone.us
Registry Domain ID: D8356795-US
Registrar WHOIS Server: whois.godaddy.com
Registrar URL: whois.godaddy.com
Updated Date: 2025-08-15T18:51:47Z
Creation Date: 2005-08-10T17:06:16Z
Registry Expiry Date: 2026-08-09T23:59:59Z
Registrar: GoDaddy.com, LLC
Registrar IANA ID: 146
Registrar Abuse Contact Email: abuse@godaddy.com
Registrar Abuse Contact Phone: +1.4806242505
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Domain Status: clientUpdateProhibited https://icann.org/epp#clientUpdateProhibited
Domain Status: clientRenewProhibited https://icann.org/epp#clientRenewProhibited
Domain Status: clientDeleteProhibited https://icann.org/epp#clientDeleteProhibited
Registry Registrant ID: C23248705-US
Registrant Name: David Smith
Registrant Organization: Cornerstone Information Systems, Inc.
Registrant Street: 800 South Main St.
Registrant Street:
Registrant Street:
Registrant City: Hopkinsville
Registrant State/Province: Kentucky
Registrant Postal Code: 42240
Registrant Country: US
Registrant Phone: +1.2708859011
Registrant Phone Ext:
Registrant Fax: +1.2708860778
Registrant Fax Ext:
Registrant Email: domains@cornerstone.us
Registrant Application Purpose: P3
Registrant Nexus Category: C11
Registry Admin ID: C23248707-US
Admin Name: David Smith
Admin Organization: Cornerstone Information Systems, Inc.
Admin Street: 800 South Main St.
Admin Street:
Admin Street:
Admin City: Hopkinsville
Admin State/Province: Kentucky
Admin Postal Code: 42240
Admin Country: US
Admin Phone: +1.2708859011
Admin Phone Ext:
Admin Fax: +1.2708860778
Admin Fax Ext:
Admin Email: domains@cornerstone.us
Admin Application Purpose: P3
Admin Nexus Category: C11
Registry Tech ID: C23248706-US
Tech Name: David Smith
Tech Organization: Cornerstone Information Systems, Inc.
Tech Street: 800 South Main St.
Tech Street:
Tech Street:
Tech City: Hopkinsville
Tech State/Province: Kentucky
Tech Postal Code: 42240
Tech Country: US
Tech Phone: +1.2708859011
Tech Phone Ext:
Tech Fax: +1.2708860778
Tech Fax Ext:
Tech Email: domains@cornerstone.us
Tech Application Purpose: P3
Tech Nexus Category: C11
Name Server: pdns02.domaincontrol.com
Name Server: pdns01.domaincontrol.com
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of WHOIS database: 2026-04-26T23:47:14Z <<<
For more information on Whois status codes, please visit https://icann.org/epp
.US WHOIS Complaint Tool - http://www.whoiscomplaints.us
Advanced WHOIS Instructions - http://whois.us/help.html
Registry Services, LLC, the Registry Administrator for .US, has collected this information for the WHOIS database through a .US-Accredited Registrar. This information is provided to you for informational purposes only and is designed to assist persons in determining contents of a domain name registration record in the registry database.
Registry Services, LLC makes this information available to you "as is" and does not guarantee its accuracy. By submitting a WHOIS query, you agree that you will use this data only for lawful purposes and that, under no circumstances will you use this data:
(1) to allow, enable, or otherwise support the transmission of mass unsolicited, commercial advertising or solicitations via direct mail, electronic mail, or by telephone;
(2) in contravention of any applicable data and privacy protection laws; or
(3) to enable high volume, automated, electronic processes that apply to the registry (or its systems).
Compilation, repackaging, dissemination, or other use of the WHOIS database in its entirety, or of a substantial portion thereof, is not allowed without our prior written permission.
We reserve the right to modify or change these conditions at any time without prior or subsequent notification of any kind. By executing this query, in any manner whatsoever, you agree to abide by these terms. NOTE: FAILURE TO LOCATE A RECORD IN THE WHOIS DATABASE IS NOT INDICATIVE OF THE AVAILABILITY OF A DOMAIN NAME. All domain names are subject to certain additional domain name registration rules. For details, please visit our site at www.whois.us.
Domain Name: CORNERSTONE.US
Registry Domain ID: D8356795-US
Registrar WHOIS Server: whois.godaddy.com
Registrar URL: https://www.godaddy.com
Updated Date: 2025-08-10T18:51:47Z
Creation Date: 2005-08-10T17:06:16Z
Registrar Registration Expiration Date: 2026-08-09T23:59:59Z
Registrar: GoDaddy.com, LLC
Registrar IANA ID: 146
Registrar Abuse Contact Email: abuse@godaddy.com
Registrar Abuse Contact Phone: +1.4806242505
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Domain Status: clientUpdateProhibited https://icann.org/epp#clientUpdateProhibited
Domain Status: clientRenewProhibited https://icann.org/epp#clientRenewProhibited
Domain Status: clientDeleteProhibited https://icann.org/epp#clientDeleteProhibited
Registrant State/Province: Kentucky
Registrant Country: US
Registrant Email: https://www.godaddy.com/whois/results.aspx?domain=CORNERSTONE.US&action=contactDomainOwner
Tech Email: https://www.godaddy.com/whois/results.aspx?domain=CORNERSTONE.US&action=contactDomainOwner
Name Server: PDNS01.DOMAINCONTROL.COM
Name Server: PDNS02.DOMAINCONTROL.COM
DNSSEC: unsigned
URL of the ICANN WHOIS Data Problem Reporting System: http://wdprs.internic.net/
>>> Last update of WHOIS database: 2026-04-26T23:47:14Z <<<
For more information on Whois status codes, please visit https://icann.org/epp
TERMS OF USE: The data contained in this registrar's Whois database, while believed by the
registrar to be reliable, is provided "as is" with no guarantee or warranties regarding its
accuracy. This information is provided for the sole purpose of assisting you in obtaining
information about domain name registration records. Any use of this data for any other purpose
is expressly forbidden without the prior written permission of this registrar. By submitting
an inquiry, you agree to these terms and limitations of warranty. In particular, you agree not
to use this data to allow, enable, or otherwise support the dissemination or collection of this
data, in part or in its entirety, for any purpose, such as transmission by e-mail, telephone,
postal mail, facsimile or other means of mass unsolicited, commercial advertising or solicitations
of any kind, including spam. You further agree not to use this data to enable high volume, automated
or robotic electronic processes designed to collect or compile this data for any purpose, including
mining this data for your own personal or commercial purposes. Failure to comply with these terms
may result in termination of access to the Whois database. These terms may be subject to modification
at any time without notice.
**NOTICE** This WHOIS server is being retired. Please use our RDAP service instead.
% Query time: 798 msec
% WHEN: Sun Apr 26 23:47:13 UTC 2026
