À quoi servent SPF, DKIM et DMARC ?
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https://support.google.com/a/answer/33786
• SPF helps servers verify that messages appearing to come from a particular domain are sent from servers authorized by the domain owner.
• DKIM adds a digital signature to every message. This lets receiving servers verify that messages aren't forged, and weren't changed during transit.
• DMARC enforces SPF and DKIM authentication, and lets admins get reports about message authentication and delivery.
Tue Nov 17 21:57:42 2020
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