Руководство Пользователя для Cisco Cisco Email Security Appliance C170

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Cisco AsyncOS 8.5.5 for Email Security User Guide

Chapter 19 Email Authentication

DMARC Verification

Procedure

Step 1

Choose Mail Policies > DMARC.

Step 2

Click Add Profile.

Step 3

Enter the name of the profile.

Step 4

Set the message action that AsyncOS takes when the policy in the DMARC record is reject. Choose one
of the following:

•

No Action. AsyncOS does not take any action on the messages that fail DMARC verification.

•

Quarantine. AsyncOS quarantines the messages that fail DMARC verification to a specified
quarantine.

•

Reject. AsyncOS rejects all messages that fail DMARC verification and returns a specified SMTP
code and response. The default values are, respectively:

550

and

#5.7.1 DMARC unauthenticated

mail is prohibited.

Step 5

Set the message action that AsyncOS takes when the policy in the DMARC record is quarantine. Choose
one of the following:

•

No Action. AsyncOS does not take any action on the messages that fail DMARC verification.

•

Quarantine. AsyncOS quarantines the messages that fail DMARC verification to a specified
quarantine.

Step 6

Set the message action that AsyncOS takes on the messages that result in temporary failure during
DMARC verification. Choose one of the following:

•

Accept. AsyncOS accepts messages that result in temporary failure during DMARC verification.

•

Reject. AsyncOS rejects messages that result in temporary failure during DMARC verification and
returns a specified SMTP code and response. The default values are, respectively:

451

and

#4.7.1

Unable to perform DMARC verification.

Step 7

Set the message action that AsyncOS takes on the messages that result in permanent failure during
DMARC verification. Choose one of the following:

•

Accept. AsyncOS accepts messages that result in permanent failure during DMARC verification.

•

Reject. AsyncOS rejects messages that result in permanent failure during DMARC verification, and
returns a specified SMTP code and response. The default values are, respectively:

550

and

#5.7.1

DMARC verification failed.

Step 8

Submit and commit your changes.

Edit a DMARC Verification Profile