Cisco Cisco Email Security Appliance C170 Guía Del Usuario
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Cisco AsyncOS 8.5 for Email User Guide
Chapter 18 Email Authentication
DMARC Verification
Configure a Return Address for DMARC Feedback Reports
Procedure
Step 1
Choose System Administration > Return Addresses.
Step 2
Click Edit Settings.
Step 3
Provide a return address for DMARC aggregate feedback reports.
Step 4
Submit and commit your changes.
DMARC Aggregate Reports
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.
manner. This feedback mechanism helps the domain owners to strengthen their authentication
deployments.
If you are using AsyncOS to perform DMARC verification and you have enabled sending of aggregate
feedback reports in the mail flow policy, AsyncOS generates aggregate feedback reports daily, and sends
it to the domain owners. These reports are in XML format and are archived into a GZip file.
feedback reports in the mail flow policy, AsyncOS generates aggregate feedback reports daily, and sends
it to the domain owners. These reports are in XML format and are archived into a GZip file.
Note
All DMARC aggregate feedback reports that AsyncOS generates are DMARC compliant.
A DMARC aggregate feedback report contains the following sections:
•
Metadata of the report sender such as email address and report ID number.
•
Details of the published DMARC policy.
•
Details of DMARC policy disposition such as source IP address and disposition summary.
•
Domain identifiers
•
DMARC verification results and authentication summary.
Sample DMARC Aggregate Feedback Report
<?xml version="1.0" encoding="UTF-8" ?>
<feedback>
<version>1.0</version>
<report_metadata>
<org_name>cisco.com</org_name>
<email>noreply-dmarc-support@cisco.com</email>
<extra_contact_info>http://cisco.com/dmarc/support</extra_contact_info>
<report_id>b1d925$4ecceab=0694614b826605cd@cisco.com</report_id>
<date_range>
<begin>1335571200</begin>
<end>1335657599</end>
</date_range>
</report_metadata>
<policy_published>
<domain>example.com</domain>
<adkim>r</adkim>
<aspf>r</aspf>
<p>none</p>
<sp>none</sp>