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: sl.on.ca
Registry Domain ID: D10406-CIRA
Registrar WHOIS Server: whois.ca.fury.ca
Registrar URL: www.rebel.ca
Updated Date: 2026-09-29T04:00:19Z
Creation Date: 2000-10-28T15:29:22Z
Registry Expiry Date: 2027-09-29T04:00:00Z
Registrar: Rebel.ca Corp.
Registrar IANA ID: not applicable
Registrar Abuse Contact Email: registryrelations@rebel.com
Registrar Abuse Contact Phone: +1.8445482157
Registrar Abuse Contact Phone Ext:
Domain Status: autoRenewPeriod https://icann.org/epp#autoRenewPeriod
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Domain Status: clientUpdateProhibited https://icann.org/epp#clientUpdateProhibited
Registry Registrant ID: 80296030-CIRA
Registrant Name: Michael Zeleny
Registrant Organization: Michael Zeleny
Registrant Street: 100 Portsmouth Ave
Registrant City: Kingston
Registrant State/Province: ON
Registrant Postal Code: K7L5A6
Registrant Country: CA
Registrant Phone: +1.6135445400
Registrant Phone Ext: 1990
Registrant Fax:
Registrant Fax Ext:
Registrant Email: noc@sl.on.ca
Registry Admin ID: 80296524-CIRA
Admin Name: Michael Zeleny
Admin Organization: Michael Zeleny
Admin Street: 100 Portsmouth Ave
Admin City: Kingston
Admin State/Province: ON
Admin Postal Code: K7L5A6
Admin Country: CA
Admin Phone: +1.6135445400
Admin Phone Ext: 1990
Admin Fax:
Admin Fax Ext:
Admin Email: noc@sl.on.ca
Registry Tech ID: 108524477-CIRA
Tech Name: SLC NOC
Tech Organization: St Lawrence College
Tech Street: 100 Portsmouth Ave
Tech City: Kingston
Tech State/Province: ON
Tech Postal Code: K7L5A6
Tech Country: CA
Tech Phone: +1.6135445400
Tech Phone Ext:
Tech Fax:
Tech Fax Ext:
Tech Email: noc@sl.on.ca
Registry Billing ID:
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Billing Street:
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Billing State/Province:
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Billing Phone:
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Name Server: ns1-09.azure-dns.com
Name Server: ns2-09.azure-dns.net
Name Server: ns3-09.azure-dns.org
Name Server: ns4-09.azure-dns.info
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of WHOIS database: 2026-10-18T08:37:22Z <<<
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: sl.on.ca
Registry Domain ID: D10406-CIRA
Registrar WHOIS Server: whois.ca.fury.ca
Registrar URL: www.rebel.ca
Updated Date: 2026-09-29T04:00:19Z
Creation Date: 2000-10-28T15:29:22Z
Registry Expiry Date: 2027-09-29T04:00:00Z
Registrar: Rebel.ca Corp.
Registrar IANA ID: not applicable
Registrar Abuse Contact Email: registryrelations@rebel.com
Registrar Abuse Contact Phone: +1.8445482157
Registrar Abuse Contact Phone Ext:
Domain Status: autoRenewPeriod https://icann.org/epp#autoRenewPeriod
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Domain Status: clientUpdateProhibited https://icann.org/epp#clientUpdateProhibited
Registry Registrant ID: 80296030-CIRA
Registrant Name: Michael Zeleny
Registrant Organization: Michael Zeleny
Registrant Street: 100 Portsmouth Ave
Registrant City: Kingston
Registrant State/Province: ON
Registrant Postal Code: K7L5A6
Registrant Country: CA
Registrant Phone: +1.6135445400
Registrant Phone Ext: 1990
Registrant Fax:
Registrant Fax Ext:
Registrant Email: noc@sl.on.ca
Registry Admin ID: 80296524-CIRA
Admin Name: Michael Zeleny
Admin Organization: Michael Zeleny
Admin Street: 100 Portsmouth Ave
Admin City: Kingston
Admin State/Province: ON
Admin Postal Code: K7L5A6
Admin Country: CA
Admin Phone: +1.6135445400
Admin Phone Ext: 1990
Admin Fax:
Admin Fax Ext:
Admin Email: noc@sl.on.ca
Registry Tech ID: 108524477-CIRA
Tech Name: SLC NOC
Tech Organization: St Lawrence College
Tech Street: 100 Portsmouth Ave
Tech City: Kingston
Tech State/Province: ON
Tech Postal Code: K7L5A6
Tech Country: CA
Tech Phone: +1.6135445400
Tech Phone Ext:
Tech Fax:
Tech Fax Ext:
Tech Email: noc@sl.on.ca
Registry Billing ID:
Billing Name:
Billing Organization:
Billing Street:
Billing City:
Billing State/Province:
Billing Postal Code:
Billing Country:
Billing Phone:
Billing Phone Ext:
Billing Fax:
Billing Fax Ext:
Billing Email:
Name Server: ns1-09.azure-dns.com
Name Server: ns2-09.azure-dns.net
Name Server: ns3-09.azure-dns.org
Name Server: ns4-09.azure-dns.info
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of WHOIS database: 2026-10-18T08:37:22Z <<<
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: 555 msec
% WHEN: Sun Oct 18 08:37:22 UTC 2026
