Cisco Cisco Email Security Appliance C190 Guia Do Utilizador

Cisco recommends that recipients who receive email alerts, scheduled reports, and other automated 
messages from the Cisco IronPort appliance be placed in an incoming mail policy that bypasses 
anti-spam scanning. These messages may contain URLs or other information associated with spam 
sources not ordinarily found in a company's mail stream which may occasionally cause such messages 
to be marked as SPAM. Alternatively, you can choose to add the IP addresses sending mail on behalf of 
the Cisco IronPort appliance to the 'WHITELIST' policy in the host access table (see 

). For more information, please contact your authorized Cisco IronPort 

appliance support center.

Cisco IronPort Anti-Spam uses conventional techniques and innovative context-sensitive detection 
technology to eliminate a diverse range of known and emerging email threats. 

Your Cisco IronPort appliance ships with a 30-day evaluation key for the Cisco 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, Cisco 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 Cisco 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.)

Cisco 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 — Cisco IronPort Anti-Spam is tuned to deliver 
industry-leading efficacy world-wide.