What is SPF, DMARC and DKIM?
How can you benefit by setting up correct SPF, DMARC and DKIM?
SPF - Sender policy framework (who can send on your behalf example newsletter services)
DMARC - Domain based message Authentication, reporting and Conformance (checks SPF and DKIM)
DKIM - DomainKeys Identified Mails (Sender has private key DNS shows the public key)
What can be the benefits when setup correctly?
Increase correct deliver ability
See and monitor where you are sending mails from
Prevent attackers sending spam from your domain
When you setup DMARC you can see where you are sending your emails from.
Some domains are sending from 10 different domains even if it is legit.
This can be from multiple newsletter mail sending servers.
Domains without valid SPF and DKIM values might auto quarantine at many hosting providers.
So it is recommended to setup correct SPF DKIM values.
Check your score here https://www.mail-tester.com
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