Clear Sailing IT Solutions Blog
Clear Sailing IT Solutions has been serving the St Augustine area since 2021, providing IT Support such as technical helpdesk support, computer support, and consulting to small and medium-sized businesses.
What is DMARC?
DMARC creates a common framework using both SPF and DKIM protocols for authentication It specifies whether a domain is using SPF, DKIM, or both protocols for authentication.
One main benefit of employing a DMARC policy is that senders receive DMARC reports, which provide the following information:
- Which servers and third parties are sending mail to your specific domain.
- The ratio of emails that pass DMARC.
- What servers or third parties are sending emails that failed DMARC.
- What procedures receiving mail servers take on unauthenticated emails.
The three DMARC p= policies are:
- p=none - Take no action. Treat the email as if there were no DMARC validation.
- p=quarantine - Accept the email but send it to a junk/spam folder instead of the inbox or isolate the suspicious message for further inspection.
- p=reject - Stop delivery of the email to any folder and the sender will be informed why the email is not getting delivered.
If your organization manages to execute a successful DMARC policy, you’ll have an effective way to stop most phishing emails.
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