SPF DKIM, RBL and the rest

SPF DKIM, RBL and the rest

Overview of this blog Here are some basic ideas we wish to cover. SPF allows senders to define which IP addresses are allowed to send mail for a particular domain. DKIM provides an encryption key and digital signature that verifies that an email message was not faked or altered. DMARC unifies the SPF and DKIM authentication mechanisms into a common framework and allows domain owners to declare how they would like email from that domain to be handled if it fails an authorization test.

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