A network engineer must tighten up the SPAM control policy of an organization due to a recent SPAM attack. In which scenario does enabling regional scanning improve security for this organization?
A.
when most of the received spam comes from a specific country
B.
when most of the received spam originates outside of the U.S.
C.
when most of the received email originates outside of the U.S.
D.
when most of the received email originates from a specific region
Enabling regional scanning improves security for this organization when most of the received email originates from a specific region. Regional scanning is a feature that allows Cisco ESA to apply different spam thresholds and actions based on the geographic region of the sender’s IP address, using a database of IP addresses and regions.
To enable regional scanning on Cisco ESA, the administrator can follow these steps:
Select Security Services > IronPort Anti-Spam and click Edit Settings.
Under Regional Scanning, select Enable Regional Scanning.
Choose a region from the drop-down menu, such as Asia Pacific.
Enter a spam threshold and an action for that region, such as 80 and Drop.
Click Submit.
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