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: mrtk.org
Registry Domain ID: REDACTED
Registrar WHOIS Server: http://whois.reg.com
Registrar URL: http://www.reg.com
Updated Date: 2026-04-25T08:22:45Z
Creation Date: 2009-04-28T13:56:30Z
Registry Expiry Date: 2027-04-28T13:56:30Z
Registrar: Registrar of Domain Names REG.RU LLC
Registrar IANA ID: 1606
Registrar Abuse Contact Email: abuse@reg.ru
Registrar Abuse Contact Phone: +7.4955801111
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Name Server: ns1.reg.ru
Name Server: ns2.reg.ru
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://icann.org/wicf/
>>> Last update of WHOIS database: 2026-06-12T15:20:41Z <<<
For more information on Whois status codes, please visit https://icann.org/epp
Terms of Use: Access to Public Interest Registry WHOIS information is provided to assist persons in determining the contents of a domain name registration record in the Public Interest Registry registry database. The data in this record is provided by Public Interest Registry for informational purposes only, and Public Interest Registry does not guarantee its accuracy. This service is intended only for query-based access. You agree that you will use this data only for lawful purposes and that, under no circumstances will you use this data to (a) allow, enable, or otherwise support the transmission by e-mail, telephone, or facsimile of mass unsolicited, commercial advertising or solicitations to entities other than the data recipient's own existing customers; or (b) enable high volume, automated, electronic processes that send queries or data to the systems of Registry Operator, a Registrar, or Identity Digital except as reasonably necessary to register domain names or modify existing registrations. All rights reserved. Public Interest Registry reserves the right to modify these terms at any time. By submitting this query, you agree to abide by this policy. The Registrar of Record identified in this output may have an RDDS service that can be queried for additional information on how to contact the Registrant, Admin, or Tech contact of the queried domain name.
Domain Name: MRTK.ORG
Registry Domain ID: 729a70bf3857412abdec9745219d93f8-LROR
Registrar WHOIS Server: whois.reg.com
Registrar URL: https://www.reg.com
Updated Date: 2026-04-20T08:21:46Z
Creation Date: 2009-04-28T14:56:30Z
Registrar Registration Expiration Date: 2027-04-28T14:56:30Z
Registrar: Registrar of Domain Names REG.RU LLC
Registrar IANA ID: 1606
Registrar Abuse Contact Email: abuse@reg.ru
Registrar Abuse Contact Phone: +7.4955801111
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Registry Registrant ID: ojj-ip--wtk3gfvc
Registrant Name: Andrei Pozdniakov
Registrant Organization: Denexy, LLC
Registrant Street: Svobodnaya, 50, of. 202
Registrant City: Belgorod
Registrant State/Province: Belgorodskaya obl.
Registrant Postal Code: 308000
Registrant Country: RU
Registrant Phone: +7.4722231330
Registrant Phone Ext:
Registrant Fax:
Registrant Fax Ext:
Registrant Email: info@denexy.com
Registry Admin ID: snh7ghwq7-xsc13c
Admin Name: Andrei Pozdniakov
Admin Organization: Denexy, LLC
Admin Street: Svobodnaya, 50, of. 202
Admin City: Belgorod
Admin State/Province: Belgorodskaya obl.
Admin Postal Code: 308000
Admin Country: RU
Admin Phone: +7.4722231330
Admin Phone Ext:
Admin Fax: +7.4722231330
Admin Fax Ext:
Admin Email: info@denexy.com
Registry Tech ID: qay-4rqp2y1gwfe4
Tech Name: Andrei Pozdniakov
Tech Organization: Denexy, LLC
Tech Street: Svobodnaya, 50, of. 202
Tech City: Belgorod
Tech State/Province: Belgorodskaya obl.
Tech Postal Code: 308000
Tech Country: RU
Tech Phone: +7.4722231330
Tech Phone Ext:
Tech Fax: +7.4722231330
Tech Fax Ext:
Tech Email: info@denexy.com
Name Server: ns1.reg.ru
Name Server: ns2.reg.ru
DNSSEC: unsigned
URL of the ICANN WHOIS Data Problem Reporting System: http://wdprs.internic.net/
For more information on Whois status codes, please visit: https://icann.org/epp
>>> Last update of WHOIS database: 2026.06.12T15:20:32Z <<<
% Query time: 970 msec
% WHEN: Fri Jun 12 15:20:40 UTC 2026
