Cisco Cisco Email Security Appliance C160 Mode D'Emploi

profile. For example, you would configure a return address of MAILER-DAEMON@example.com for 
the bounce return address, and add MAILER-DAEMON@example.com as a profile user in the domain 
profile. 

Create a new or import an existing private key. For information on creating or importing signing keys, 
see 

.

Create a domain profile and associate the key with the domain profile. For information on creating a 
domain profile, see 

Create the DNS text record. For information about creating the DNS text record, see 

If you have not already done so, enable DomainKeys/DKIM signing on a mail flow policy for outbound 
mail (see 

).

Optionally, enable DomainKeys/DKIM signing for bounced and delay messages. For information about 
enabling signing for bounce and delay messages, see 

.

Send email. Mail sent from a domain that matches a domain profile will be DomainKeys/DKIM signed. 
In addition, bounce or delay messages will be signed if you configured signing for bounce and delay 
messages.

If you create both a DomainKey and DKIM profile (and enable signing on a mail flow policy), AsyncOS 
signs outgoing messages with both a DomainKeys and DKIM signature.