Cisco Cisco Email Security Appliance C170 Guia Do Utilizador

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Chapter 5      Email Authentication
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Cisco IronPort AsyncOS 7.3 for Email Advanced Configuration Guide
OL-23081-01
Step 4
Enter a selector. Selectors are arbitrary names prepended to the "_domainkey" 
namespace, used to help support multiple concurrent public keys per sending 
domain. A selector value and length must be legal in the DNS namespace and in 
email headers with the additional provision that they cannot contain a semicolon. 
Step 5
Select the canonicalization (no forwarding whitespaces or simple).
Step 6
Select a signing key (If you have already created a signing key, otherwise, skip to 
the next step). You must create (or import) at least one signing key in order to have 
signing keys to choose from in the list. See 
Step 7
Enter users (email addresses, hosts, etc.) that will use the domain profile for 
signing.
Step 8
Click Submit.
Step 9
Click the Commit Changes button, add an optional comment if necessary, and 
then click Commit Changes to finish adding the new domain profile.
Step 10
At this point (if you have not already) you should enable DomainKeys/DKIM 
signing on an outgoing mail flow policy (see 
Creating Domain Profiles for DKIM Signing
To create a new domain profile for DKIM signing:
Step 1
Click Add Profile on the Domain Profiles page. 
Step 2
Enter a name for the profile, and the Domain Key type (DKIM). After you select 
the Domain Key type, the Add Domain Profile page is displayed.