Руководство Пользователя для Cisco Cisco Content Security Management Appliance M160
7-9
AsyncOS 9.5.2 for Cisco Content Security Management Appliances User Guide
Chapter 7 Spam Quarantine
Using Safelists and Blocklists to Control Email Delivery Based on Sender
Because safelists and blocklists are maintained in the spam quarantine, delivery behavior is also
contingent on other anti-spam settings. For example, if you configure the “Accept” mail flow policy in
the Host Access Table (HAT) to skip anti-spam scanning, then users who receive mail on that listener
will not have their safelist and blocklist settings applied to mail received on that listener. Similarly, if
you create a mail flow policy that skips anti-spam scanning for certain message recipients, these
recipients will not have their safelist and blocklist settings applied.
contingent on other anti-spam settings. For example, if you configure the “Accept” mail flow policy in
the Host Access Table (HAT) to skip anti-spam scanning, then users who receive mail on that listener
will not have their safelist and blocklist settings applied to mail received on that listener. Similarly, if
you create a mail flow policy that skips anti-spam scanning for certain message recipients, these
recipients will not have their safelist and blocklist settings applied.
Related Topics
•
•
Enabling Safelists and Blocklists
Before You Begin
•
The spam quarantine must be enabled. See
.
•
Configure the Email Security appliance to use an external safelist/blocklist. See instructions for
setting up an external spam quarantine in the documentation for your Email Security appliance.
setting up an external spam quarantine in the documentation for your Email Security appliance.
Procedure
Step 1
Select Management Appliance > Centralized Services > Spam Quarantine.
Step 2
In the End-User Safelist/Blocklist (Spam Quarantine) section, select Enable.
Step 3
Select Enable End User Safelist/Blocklist Feature.
Step 4
Specify the Maximum List Items Per User.
This is the maximum number of addresses or domains for each list, for each recipient. If you allow a
large number of list entries per user, system performance might be adversely affected.
large number of list entries per user, system performance might be adversely affected.
Step 5
Select the update frequency. This value determines how often AsyncOS updates the safelists/blocklists
on the Email Security appliances that use the external spam quarantine. The significance of this setting
is described in
on the Email Security appliances that use the external spam quarantine. The significance of this setting
is described in
.
Step 6
Submit and commit your changes.
External Spam Quarantine and Safelist/Blocklists
Because the Email Security appliance evaluates senders in safelists and blocklists when processing
incoming mail, safelists and blocklists that are stored on a Security Management appliance must be sent
to the Email Security appliance in order to be applied to incoming mail. When you configure the
safelist/blocklist feature on a Security Management appliance, you configure the frequency of these
updates.
incoming mail, safelists and blocklists that are stored on a Security Management appliance must be sent
to the Email Security appliance in order to be applied to incoming mail. When you configure the
safelist/blocklist feature on a Security Management appliance, you configure the frequency of these
updates.