Cisco Cisco Email Security Appliance C170 Guia Do Utilizador

Página de 548
Chapter 4      Email Authentication
4-274
Cisco IronPort AsyncOS 7.1 for Email Advanced Configuration Guide
OL-22164-02
Basic Granularity Test of SPF/SIDF Results
To get a basic measure of the SPF/SIDF verification results for incoming mail, 
you can use content filters and the Email Security Monitor - Content Filters page. 
This test provides a view of the number of messages received for each type of 
SPF/SIDF verification result. 
To perform a basic SPF/SIDF verification test:
Step 1
Enable SPF/SIDF verification for a mail flow policy on an incoming listener, and 
use a content filter to configure an action to take. For information on enabling 
SPF/SIDF, see 
Step 2
Create an 
spf-status
 content filter for each type of SPF/SIDF verification. Use 
a naming convention to indicate the type of verification. For example, use 
“SPF-Passed” for messages that pass SPF/SIDF verification, or “SPF-TempErr” 
for messages that weren’t passed due to a transient error during verification. For 
information about creating an 
spf-status
 content filter, see 
Step 3
After you have processed a number of SPF/SIDF verified messages, click Monitor 
> Content Filters to see how many messages triggered each of the SPF/SIDF 
verified content filters. 
Greater Granularity Test of SPF/SIDF Results
For more comprehensive information about SPF/SIDF verification results, only 
enable SPF/SIDF verification for specific groups of senders, and review the 
results for those specific senders. Then, create a mail policy for that particular 
group and enable SPF/SIDF verification on the mail policy. Create content filters 
and review the Content Filters report as explained in 
. If you find that the verification is effective, then 
you can use SPF/SIDF verification as a basis for deciding whether to drop or 
bounce emails for this specified group of senders. 
To perform a granular SPF/SIDF verification test:
Step 1
Create a mail flow policy for SPF/SIDF verification. Enable SPF/SIDF 
verification for the mail flow policy on an incoming listener. For information 
about enabling SPF/SIDF, see 
.