Cisco Cisco Email Security Appliance X1070 User Guide
17-14
Cisco AsyncOS 8.0.1 for Email User Guide
Chapter 17 Email Authentication
How to Verify Incoming Messages Using DKIM
Signing System-Generated Messages
You can choose whether to sign system-generated messages with a DKIM signature. The appliance will
sign the following messages:
sign the following messages:
•
Cisco IronPort Spam Quarantine notifications
•
Content filter-generated notifications
•
Configuration messages
•
Support requests
Procedure
Step 1
Choose Mail Policies > Signing Profiles.
Step 2
In the DKIM Signing of System Generated Messages section, click Edit Settings.
Step 3
Select On.
Step 4
Submit and commit your changes.
Domain Keys and Logging
Lines such as the following are added to the mail logs upon DomainKeys signing:
Lines such as these are added to the mail logs upon DKIM signing:
How to Verify Incoming Messages Using DKIM
Tue Aug 28 15:29:30 2007 Info: MID 371 DomainKeys: signing with dk-profile - matches
user123@example.com
Tue Aug 28 15:34:15 2007 Info: MID 373 DomainKeys: cannot sign - no profile matches
user12@example.com
Tue Aug 28 15:29:54 2007 Info: MID 372 DKIM: signing with dkim-profile - matches
user@example.com
Tue Aug 28 15:34:15 2007 Info: MID 373 DKIM: cannot sign - no profile matches
user2@example.com
Table 17-1
How to Verify Incoming Messages Using DKIM
Do This
More Info
Step 1
Create a profile for verifying messages using
DKIM.
DKIM.
.
Step 2
(Optional) Create a custom mail flow policy to
use for verifying incoming messages using
DKIM.
use for verifying incoming messages using
DKIM.