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: isaacsco.ca
Registry Domain ID: D577778-CIRA
Registrar WHOIS Server: whois.ca.fury.ca
Registrar URL: https://help.opensrs.com/hc/en-us
Updated Date: 2024-05-13T18:16:32Z
Creation Date: 2008-01-08T19:27:46Z
Registry Expiry Date: 2029-01-08T05:00:00Z
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: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Domain Status: clientUpdateProhibited https://icann.org/epp#clientUpdateProhibited
Registry Registrant ID: 112086763-CIRA
Registrant Name: Marc Isaacs
Registrant Organization: Isaacs Odinocki LLP
Registrant Street: 1 Dundas St W, Toronto, ON M5B 2H1, 2110
Registrant City: Toronto
Registrant State/Province: ON
Registrant Postal Code: M5G1Z3
Registrant Country: CA
Registrant Phone: +1.6472486049
Registrant Phone Ext:
Registrant Fax:
Registrant Fax Ext:
Registrant Email: marc@iolaw.ca
Registry Admin ID: 112043648-CIRA
Admin Name: MBC Support
Admin Organization: MBC Computer Solutions Ltd.
Admin Street: 70 East Beaver Creek Rd., Unit 43
Admin City: Richmond Hill
Admin State/Province: ON
Admin Postal Code: L4B3B2
Admin Country: CA
Admin Phone: +1.9053074357
Admin Phone Ext:
Admin Fax:
Admin Fax Ext:
Admin Email: DomainRegistrar@mbccs.com
Registry Tech ID: 112043481-CIRA
Tech Name: MBC Support
Tech Organization: MBC Computer Solutions Ltd.
Tech Street: 70 East Beaver Creek Rd., Unit 43
Tech City: Richmond Hill
Tech State/Province: ON
Tech Postal Code: L4B3B2
Tech Country: CA
Tech Phone: +1.9053074357
Tech Phone Ext:
Tech Fax:
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Tech Email: DomainRegistrar@mbccs.com
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Name Server: ns1-38.azure-dns.com
Name Server: ns2-38.azure-dns.net
Name Server: ns3-38.azure-dns.org
Name Server: ns4-38.azure-dns.info
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of WHOIS database: 2026-05-05T13:47:45Z <<<
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: isaacsco.ca
Registry Domain ID: D577778-CIRA
Registrar WHOIS Server: whois.ca.fury.ca
Registrar URL: https://help.opensrs.com/hc/en-us
Updated Date: 2024-05-13T18:16:32Z
Creation Date: 2008-01-08T19:27:46Z
Registry Expiry Date: 2029-01-08T05:00:00Z
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: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Domain Status: clientUpdateProhibited https://icann.org/epp#clientUpdateProhibited
Registry Registrant ID: 112086763-CIRA
Registrant Name: Marc Isaacs
Registrant Organization: Isaacs Odinocki LLP
Registrant Street: 1 Dundas St W, Toronto, ON M5B 2H1, 2110
Registrant City: Toronto
Registrant State/Province: ON
Registrant Postal Code: M5G1Z3
Registrant Country: CA
Registrant Phone: +1.6472486049
Registrant Phone Ext:
Registrant Fax:
Registrant Fax Ext:
Registrant Email: marc@iolaw.ca
Registry Admin ID: 112043648-CIRA
Admin Name: MBC Support
Admin Organization: MBC Computer Solutions Ltd.
Admin Street: 70 East Beaver Creek Rd., Unit 43
Admin City: Richmond Hill
Admin State/Province: ON
Admin Postal Code: L4B3B2
Admin Country: CA
Admin Phone: +1.9053074357
Admin Phone Ext:
Admin Fax:
Admin Fax Ext:
Admin Email: DomainRegistrar@mbccs.com
Registry Tech ID: 112043481-CIRA
Tech Name: MBC Support
Tech Organization: MBC Computer Solutions Ltd.
Tech Street: 70 East Beaver Creek Rd., Unit 43
Tech City: Richmond Hill
Tech State/Province: ON
Tech Postal Code: L4B3B2
Tech Country: CA
Tech Phone: +1.9053074357
Tech Phone Ext:
Tech Fax:
Tech Fax Ext:
Tech Email: DomainRegistrar@mbccs.com
Registry Billing ID:
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Name Server: ns1-38.azure-dns.com
Name Server: ns2-38.azure-dns.net
Name Server: ns3-38.azure-dns.org
Name Server: ns4-38.azure-dns.info
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of WHOIS database: 2026-05-05T13:47:45Z <<<
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: 764 msec
% WHEN: Tue May 05 13:47:45 UTC 2026
