Under Web Reputation on the Scanning Conditions screen,
select the Web Reputation settings check
box.
Click Next to continue configuring
the policy.
The Web Reputation Settings screen appears.
Select one of the following catch rates or specify a
detection threshold.
High: Blocks more websites
embedded in messages. Select a high sensitivity level if your clients
are visiting too many malicious websites.
Medium: Blocks an average amount
of websites (the default selection).
Low: Blocks fewer websites embedded
in messages. Select a low sensitivity level if IMSVA is
blocking too many legitimate websites embedded in messages.
Select the Enable the use of the Web Reputation
Approved List check box to bypass scanning and blocking
of domains in the Web Reputation Approved List.
Click Save to continue selecting
scanning conditions.