This algorithm creates a unique string of characters, or a “hash value.”ĭMARC asks, “Did SPF and DKIM pass? Let’s run through our policies that tell us what to do if the email is accepted or rejected.” Putting it all together The sending mail transfer agent (MTA) generates the signature by using an algorithm applied to the content of the signed fields. This “signature” is located in the message’s header. One of the best explanation of DKIM comes from : A sender creates the DKIM by “signing” the email with a digital signature. ![]() For example, if you are using MailChimp, you will need to add records to cover it.ĭKIM asks, “Can I check your digital signature? I need to check the signature against the sending server.” You need a record for any service that sends email on your_’s behalf. There are three responses: Accept, Reject, and Accept but send to spam. SPF asks, “Is this IP address allowed to send mail on behalf your_company?” I’m going to simplify my explanation to a certain extent, but here is what each one of those are asking: These all have corresponding DNS records that must be configured.
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