Cisco Cisco Email Security Appliance C170 Mode D'Emploi
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Cisco IronPort AsyncOS 7.5 for Email Advanced Configuration Guide
OL-25137-01
Chapter 5 Email Authentication
Figure 5-8
Add Domain Profile Page (DKIM)
Step 3
Enter the domain name.
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.
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 for the header. Choose from the following options:
•
Relaxed. The “relaxed” header canonicalization algorithm performs the
following: header names are changed to lowercase, headers are unfolded,
linear white spaces are reduced to a single space, leading and trailing spaces
are stripped.
following: header names are changed to lowercase, headers are unfolded,
linear white spaces are reduced to a single space, leading and trailing spaces
are stripped.
•
Simple. No changes to headers are made.
Step 6
Select the canonicalization for the body. Choose from the following options: