Cisco Cisco Email Security Appliance C170 Guia Do Utilizador

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Chapter 8      Anti-Spam
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Cisco IronPort AsyncOS 7.5 for Email Configuration Guide
OL-25136-01
Evaluation Key
Your Cisco IronPort appliance ships with a 30-day evaluation key for the IronPort 
Anti-Spam software. This key is not enabled until you accept the license 
agreement in the system setup wizard or Security Services > IronPort Anti-Spam 
pages (in the GUI) or the 
systemsetup
 or 
antispamconfig
 commands (in the 
CLI). Once you have accepted the agreement, IronPort Anti-Spam will be 
enabled, by default, for the default incoming Mail Policy. An alert is also sent to 
the administrator address you configured (see 
) noting 
that the IronPort Anti-Spam license will expire in 30 days. Alerts are sent 30, 15, 
5, and 0 days prior to expiration. For information on enabling the feature beyond 
the 30-day evaluation period, contact your Cisco IronPort sales representative. 
You can see how much time remains on the evaluation via the System 
Administration > Feature Keys page or by issuing the 
featurekey
 command. (For 
more information, see the section on working with feature keys in “Common 
Administrative Tasks” in the Cisco IronPort AsyncOS for Email Daily 
Management Guide
.)
IronPort Anti-Spam and CASE: an Overview
IronPort Anti-Spam filtering is based on Context Adaptive Scanning Engine 
(CASE) ™, and is the first anti-spam scanning engine to combine email and web 
reputation information to:
Eliminate the broadest range of email threats — detect spam, “phishing,” 
zombie-based attacks, and other “blended” threats.
Deliver the highest accuracy — anti-spam rules based on email and web 
reputation from SenderBase Reputation Service.
Offer ease of use — due to reduced hardware and administrative costs.
Deliver industry leading performance — CASE uses dynamic early exit 
criteria and off-box network calculations to deliver breakthrough 
performance.
Address the needs of international users — IronPort Anti-Spam is tuned to 
deliver industry-leading efficacy world-wide.