A properly configured DMARC (Domain-based Message Authentication, Reporting, and Conformance) record can provide valuable information about email authentication and security for a domain. It really "turns the lights on" in regards to your email delivery health and allows for informed decisions to be made about your delivery situation.
Some of the information that can be gathered from a DMARC record includes:
Authentication results:
DMARC can provide information about the results of email authentication checks, such as SPF and DKIM. Specifically, DMARC can indicate whether a message passed or failed SPF and/or DKIM authentication.
Source of email messages:
DMARC can provide information about the sources of email messages claiming to be from a particular domain. This can help identify fraudulent or unauthorized messages, such as phishing or spoofing attempts.
Email policy:
DMARC can specify a policy for how email receivers should handle email messages that fail authentication checks. This can help prevent unauthorized or fraudulent messages from reaching recipients' inboxes.
Reporting data:
DMARC can provide data on email traffic, including information on the volume of email traffic and the sources of email messages claiming to be from the domain. This data can be used to identify trends and potential issues with email authentication and security.
Overall, a properly configured DMARC record can provide valuable insights into email authentication and security for a domain, which can help prevent fraudulent or unauthorized messages and improve email deliverability and communication.
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