SPF DKIM, RBL and the rest

• Friday, Apr 2, 2021
• Posted by Girish Venkatachalam
• SPF, DKIM, spam control, DMARC

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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