Cisco Cisco Email Security Appliance C190 ユーザーガイド

Click the incoming mail policy for the listener where you want to perform verification.

In the Security Features section of the mail flow policy, enable DMARC Verification by choosing On.

Select the DMARC verification profile that you want to use for the policy.

(Optional) Enable sending of DMARC aggregate feedback reports to email addresses in the RUA tag of 
DMARC-enabled domains from whom messages are received.

Aggregate feedback reports are generated daily. 

Submit and commit your changes.

Log messages are added to the mail logs during the following stages of DMARC verification.

DMARC verification attempted on a message

DMARC verification is complete

DMARC verification details including DKIM and SPF alignment results

DMARC verification on a message is skipped

DMARC record is fetched and parsed or DNS failures

DMARC aggregate report delivery for a domain failed

Error report generated for a domain

Error report delivery for a domain succeeded

Error report delivery for a domain failed

Choose System Administration > Return Addresses.

Click Edit Settings. 

Provide a return address for DMARC aggregate feedback reports.

Submit and commit your changes.

DMARC relies on a feedback mechanism to enforce domain owner policies safely and in a scalable 
manner. This feedback mechanism helps the domain owners to strengthen their authentication 
deployments.