Cisco Cisco Email Security Appliance C160 Mode D'Emploi

In some cases, it is necessary to record the presence and contents of a message’s headers as they pass 
through the system. You specify the headers to record in the Log Subscriptions Global Settings page (or 
via the 

logconfig

 -> 

logheaders

 subcommand in the CLI). The Email Security appliance records the 

specified message headers in the Text Mail Logs, the Delivery Logs, and the Bounce Logs. If the header 
is present, the system records the name of the header and the value. If a header is not present, nothing is 
recorded in the logs.

The system evaluates all headers that are present on a message, at any time during the processing of the 
message for recording, regardless of the headers specified for logging.

The RFC for the SMTP protocol is located at 

http://www.faqs.org/rfcs/rfc2821.html

 and defines user-defined headers. 

If you have configured headers to log via the 

logheaders

 command, the header information appears after 

the delivery information:

For example, specifying “date, x-subject” as headers to be logged will cause the following line to appear 
in the mail log:

Choose System Administration > Log Subscriptions.

Scroll down to the Global Settings section. 

Click Edit Settings. 

Specify information including the system measurement frequency, whether to include Message-ID 
headers in mail logs, whether to include the remote response, and whether to include the original subject 
header of each message.

Enter any other headers you wish to include in the logs.

Submit and commit your changes.

Name of the header

Contents of the logged header