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: certes.ca
Registry Domain ID: 17993208-CIRA
Registrar WHOIS Server: whois.ca.fury.ca
Registrar URL: https://help.opensrs.com/hc/en-us
Updated Date: 2025-07-21T21:44:33Z
Creation Date: 2014-08-29T21:56:58Z
Registry Expiry Date: 2027-08-29T21:56:58Z
Registrar: Tucows.com Co.
Registrar IANA ID: not applicable
Registrar Abuse Contact Email: compliance@tucows.com
Registrar Abuse Contact Phone: +1.4165350123
Registrar Abuse Contact Phone Ext:
Domain Status: ok https://icann.org/epp#ok
Registry Registrant ID: 17993115-CIRA
Registrant Name: George Jennings
Registrant Organization: Certes Applied and Natural Science Ltd.
Registrant Street: 2059 Sifton Ave
Registrant City: Kamloops
Registrant State/Province: BC
Registrant Postal Code: V1S1A8
Registrant Country: CA
Registrant Phone: +1.2503743354
Registrant Phone Ext:
Registrant Fax:
Registrant Fax Ext:
Registrant Email: gjennings@certes.ca
Registry Admin ID: 18688071-CIRA
Admin Name: George Jennings
Admin Organization: Certes Applied and Natural Science Ltd.
Admin Street: 2059 Sifton Ave
Admin City: Kamloops
Admin State/Province: BC
Admin Postal Code: V1S1A8
Admin Country: CA
Admin Phone: +1.2503743354
Admin Phone Ext:
Admin Fax:
Admin Fax Ext:
Admin Email: george.jennings@shaw.ca
Registry Tech ID: 18688072-CIRA
Tech Name: Mickael Maddison
Tech Organization: SilverServers Inc.
Tech Street: 230-1210 Summit Drive, #203
Tech City: Kamloops
Tech State/Province: BC
Tech Postal Code: V2C6M1
Tech Country: CA
Tech Phone: +1.8885694192
Tech Phone Ext:
Tech Fax: +1.8885694192
Tech Fax Ext:
Tech Email: staff@silverservers.com
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Name Server: ns1.silverservers.com
Name Server: ns2.silverservers.com
Name Server: ns3.silverservers.com
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of WHOIS database: 2026-05-03T11:16:48Z <<<
For more information on Whois status codes, please visit https://icann.org/epp
%
% Use of CIRA's WHOIS service is governed by the Terms of Use in its Legal
% Notice, available at https://www.cira.ca/en/resources/documents/about/website-terms-use
%
% (c) 2026 Canadian Internet Registration Authority, (http://www.cira.ca/)
Domain Name: certes.ca
Registry Domain ID: 17993208-CIRA
Registrar WHOIS Server: whois.ca.fury.ca
Registrar URL: https://help.opensrs.com/hc/en-us
Updated Date: 2025-07-21T21:44:33Z
Creation Date: 2014-08-29T21:56:58Z
Registry Expiry Date: 2027-08-29T21:56:58Z
Registrar: Tucows.com Co.
Registrar IANA ID: not applicable
Registrar Abuse Contact Email: compliance@tucows.com
Registrar Abuse Contact Phone: +1.4165350123
Registrar Abuse Contact Phone Ext:
Domain Status: ok https://icann.org/epp#ok
Registry Registrant ID: 17993115-CIRA
Registrant Name: George Jennings
Registrant Organization: Certes Applied and Natural Science Ltd.
Registrant Street: 2059 Sifton Ave
Registrant City: Kamloops
Registrant State/Province: BC
Registrant Postal Code: V1S1A8
Registrant Country: CA
Registrant Phone: +1.2503743354
Registrant Phone Ext:
Registrant Fax:
Registrant Fax Ext:
Registrant Email: gjennings@certes.ca
Registry Admin ID: 18688071-CIRA
Admin Name: George Jennings
Admin Organization: Certes Applied and Natural Science Ltd.
Admin Street: 2059 Sifton Ave
Admin City: Kamloops
Admin State/Province: BC
Admin Postal Code: V1S1A8
Admin Country: CA
Admin Phone: +1.2503743354
Admin Phone Ext:
Admin Fax:
Admin Fax Ext:
Admin Email: george.jennings@shaw.ca
Registry Tech ID: 18688072-CIRA
Tech Name: Mickael Maddison
Tech Organization: SilverServers Inc.
Tech Street: 230-1210 Summit Drive, #203
Tech City: Kamloops
Tech State/Province: BC
Tech Postal Code: V2C6M1
Tech Country: CA
Tech Phone: +1.8885694192
Tech Phone Ext:
Tech Fax: +1.8885694192
Tech Fax Ext:
Tech Email: staff@silverservers.com
Registry Billing ID:
Billing Name:
Billing Organization:
Billing Street:
Billing City:
Billing State/Province:
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Billing Fax:
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Billing Email:
Name Server: ns1.silverservers.com
Name Server: ns2.silverservers.com
Name Server: ns3.silverservers.com
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of WHOIS database: 2026-05-03T11:16:48Z <<<
For more information on Whois status codes, please visit https://icann.org/epp
%
% Use of CIRA's WHOIS service is governed by the Terms of Use in its Legal
% Notice, available at https://www.cira.ca/en/resources/documents/about/website-terms-use
%
% (c) 2026 Canadian Internet Registration Authority, (http://www.cira.ca/)
% Query time: 696 msec
% WHEN: Sun May 03 11:16:47 UTC 2026
