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: atco.ca
Registry Domain ID: D611723-CIRA
Registrar WHOIS Server: whois.ca.fury.ca
Registrar URL: webnames.ca
Updated Date: 2026-03-03T16:03:11Z
Creation Date: 2000-10-25T14:44:23Z
Registry Expiry Date: 2027-03-05T05:00:00Z
Registrar: Webnames.ca Inc.
Registrar IANA ID: 456
Registrar Abuse Contact Email: abuse@webnames.ca
Registrar Abuse Contact Phone: +1.8662217878
Registrar Abuse Contact Phone Ext:
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Registry Registrant ID: 109669557-CIRA
Registrant Name: AtcoDomains AtcoDomains
Registrant Organization: ATCO Technology Management Ltd
Registrant Street: 5302 Forand St. SW
Registrant City: Calgary
Registrant State/Province: AB
Registrant Postal Code: T3E8B4
Registrant Country: CA
Registrant Phone: +1.7804208936
Registrant Phone Ext:
Registrant Fax:
Registrant Fax Ext:
Registrant Email: marketing@atco.com
Registry Admin ID: 109669418-CIRA
Admin Name: AtcoDomains AtcoDomains
Admin Organization: ATCO Technology Management Ltd
Admin Street: 5302 Forand St. SW
Admin City: Calgary
Admin State/Province: AB
Admin Postal Code: T3E8B4
Admin Country: CA
Admin Phone: +1.7804208936
Admin Phone Ext:
Admin Fax:
Admin Fax Ext:
Admin Email: marketing@atco.com
Registry Tech ID: 109669419-CIRA
Tech Name: AtcoDomains AtcoDomains
Tech Organization: ATCO Technology Management Ltd
Tech Street: 5302 Forand St. SW
Tech City: Calgary
Tech State/Province: AB
Tech Postal Code: T3E8B4
Tech Country: CA
Tech Phone: +1.7804208936
Tech Phone Ext:
Tech Fax:
Tech Fax Ext:
Tech Email: marketing@atco.com
Registry Billing ID:
Billing Name:
Billing Organization:
Billing Street:
Billing City:
Billing State/Province:
Billing Postal Code:
Billing Country:
Billing Phone:
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Billing Fax:
Billing Fax Ext:
Billing Email:
Name Server: atcodns3.atco.ca
Name Server: atcoinns.atco.ca
Name Server: atcoinss.atco.ca
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of WHOIS database: 2026-05-30T05:24:15Z <<<
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: atco.ca
Registry Domain ID: D611723-CIRA
Registrar WHOIS Server: whois.ca.fury.ca
Registrar URL: webnames.ca
Updated Date: 2026-03-03T16:03:11Z
Creation Date: 2000-10-25T14:44:23Z
Registry Expiry Date: 2027-03-05T05:00:00Z
Registrar: Webnames.ca Inc.
Registrar IANA ID: 456
Registrar Abuse Contact Email: abuse@webnames.ca
Registrar Abuse Contact Phone: +1.8662217878
Registrar Abuse Contact Phone Ext:
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Registry Registrant ID: 109669557-CIRA
Registrant Name: AtcoDomains AtcoDomains
Registrant Organization: ATCO Technology Management Ltd
Registrant Street: 5302 Forand St. SW
Registrant City: Calgary
Registrant State/Province: AB
Registrant Postal Code: T3E8B4
Registrant Country: CA
Registrant Phone: +1.7804208936
Registrant Phone Ext:
Registrant Fax:
Registrant Fax Ext:
Registrant Email: marketing@atco.com
Registry Admin ID: 109669418-CIRA
Admin Name: AtcoDomains AtcoDomains
Admin Organization: ATCO Technology Management Ltd
Admin Street: 5302 Forand St. SW
Admin City: Calgary
Admin State/Province: AB
Admin Postal Code: T3E8B4
Admin Country: CA
Admin Phone: +1.7804208936
Admin Phone Ext:
Admin Fax:
Admin Fax Ext:
Admin Email: marketing@atco.com
Registry Tech ID: 109669419-CIRA
Tech Name: AtcoDomains AtcoDomains
Tech Organization: ATCO Technology Management Ltd
Tech Street: 5302 Forand St. SW
Tech City: Calgary
Tech State/Province: AB
Tech Postal Code: T3E8B4
Tech Country: CA
Tech Phone: +1.7804208936
Tech Phone Ext:
Tech Fax:
Tech Fax Ext:
Tech Email: marketing@atco.com
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: atcodns3.atco.ca
Name Server: atcoinns.atco.ca
Name Server: atcoinss.atco.ca
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of WHOIS database: 2026-05-30T05:24:15Z <<<
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: 661 msec
% WHEN: Sat May 30 05:24:15 UTC 2026
