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Cisco Cisco Email Security Appliance C680 User Guide

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User Guide for AsyncOS 10.0 for Cisco Email Security Appliances
 
Chapter 22      Email Authentication
  DMARC Verification
6.
AsyncOS sends an appropriate SMTP response and continues processing.
7.
If sending of aggregate reports is enabled, AsyncOS gathers DMARC verification data and includes 
it in the daily report sent to the domain owners. For more information about the DMARC aggregate 
feedback report, see 
.
Note
If the aggregate report size exceeds 10 MB or the size specified in the RUA tag of the 
DMARC record, AsyncOS sends delivery error reports to the domain owners.
How to Verify Incoming Messages Using DMARC
Related Topics
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Managing DMARC Verification Profiles
A DMARC verification profile is a list of parameters that the mail flow policies of the Email Security 
appliance use for verifying DMARC. For example, you may want to create a stringent profile that rejects 
all non-compliant messages from a particular domain and a less stringent profile that quarantines all 
non-compliant messages from another domain.
A DMARC verification profile consists of the following information:
•
A name for the verification profile.
Table 22-4
How to Verify Incoming Messages Using DMARC
Do This
More Information
Step 1
Create a new DMARC verification profile or 
modify the default DMARC verification profile 
to meet your requirements.
Step 2
(Optional) Configure global DMARC settings 
to meet your requirements. 
Step 3
Configure your mail flow policies to verify 
incoming messages using DMARC.
Step 4
(Optional) Configure a return address for 
DMARC feedback reports.
Step 5
(Optional) Review the following:
•
DMARC Verification and Incoming Mail 
reports 
•
Messages that failed DMARC verification 
using Message Tracking
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