Cisco Cisco Email Security Appliance C370D ユーザーガイド
8-11
Cisco IronPort AsyncOS 7.5 for Email Configuration Guide
OL-25136-01
Chapter 8 Anti-Spam
Step 1
If you have not enabled IronPort Anti-Spam in the system setup wizard, select
Security Services > IronPort Anti-Spam.
Security Services > IronPort Anti-Spam.
Step 2
Click Enable.
The license agreement page is displayed.
Note
If you do not accept the license agreement, IronPort Anti-Spam is not
enabled on the appliance.
enabled on the appliance.
Step 3
Scroll to the bottom of the page and click Accept to accept the agreement.
A page similar to
is displayed.
Step 4
Click Edit Global Settings.
Step 5
Check the box next to Enable IronPort Anti-Spam scanning.
Checking this box enables the feature globally for the appliance. However, you
must still enable per-recipient settings in Mail Policies. For more information, see
must still enable per-recipient settings in Mail Policies. For more information, see
Step 6
Enter a value for the always scan message size for IronPort Anti-Spam.
The recommended value is 512 Kb or less. Messages smaller than the always scan
size will be fully scanned by CASE, except in cases of “early exit.” Messages
larger than this size are partially scanned by CASE if they are smaller than the
never scan size entered in
size will be fully scanned by CASE, except in cases of “early exit.” Messages
larger than this size are partially scanned by CASE if they are smaller than the
never scan size entered in
for more information on the “early exit” system.
Note
Cisco advises not to exceed 3 MB for the always scan message size. A
larger value may result in decreased performance.
larger value may result in decreased performance.
Step 7
Enter a value for the never scan message size.
The recommended value is 1024 Kb or less. Messages larger than this size will
not be scanned by IronPort Anti-Spam and the
not be scanned by IronPort Anti-Spam and the
X-IronPort-Anti-Spam-Filtered: true
header will not be added to the
message.