What are DKIM, SPF and DMARC?
In this faq we will explain what DKIM (DomainKeys Identified Mail), SPF (Sender Policy Framework) and DMARC (Domain-based Message Authentication, Reporting and Conformance) are and what their role is.
DomainKeys Identified Mail (DKIM) is a method of associating the identity of a domain for a sent message and validating the identity of a domain associated with a message received through cryptographic authentication.
SPF (Sender Policy Framework) is a method of preventing an email address from being spoofed.. SPF allows the email server to check messages received from a domain that has been authorized to send messages by the administrator of that domain
DMARC (Domain-based Message Authentication, Reporting and Conformance) is a technology designed to expand the capabilities of SPF and DKIM. DMARC defines how the receiving email server handles an email based on the result of checks made by SPF and DKIM.