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InterScanTM Messaging Security Virtual Appliance - Online Help ...

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Trend Micro InterScan <strong>Messaging</strong> <strong>Security</strong> <strong>Virtual</strong> <strong>Appliance</strong> Administrator’s Guide<br />

Understanding Cloud Pre-Filter Policies<br />

8-2<br />

The Cloud Pre-Filter service offers policy-based management of your email security.<br />

The policy for a domain regulates how each filter is applied to messages sent to the<br />

domain.<br />

The following table lists the information that defines each policy.<br />

TABLE 8-1. Cloud Pre-Filter Policies<br />

SECTION DESCRIPTION<br />

Domain The domain that will be covered by the policy. With<br />

the correct routing settings, all email messages to<br />

this domain are protected by Cloud Pre-Filter.<br />

Each domain must be unique, and only one policy<br />

can be applied to a domain.<br />

Valid Recipient This setting works by comparing the list of users on<br />

your LDAP servers to a list of your users on Cloud<br />

Pre-Filter. The Cloud Pre-Filter list of your users is<br />

generated by synchronizing with your LDAP servers.<br />

Use the valid recipient check to block all email that<br />

does not have a recipient on your domain. This prevents<br />

malicious email messages and spam from<br />

reaching your network.<br />

Filter settings These settings define the following Cloud Pre-Filter<br />

filtering options:<br />

• Whether a filter is enabled or not<br />

• For filters that support this option, how each<br />

filtering criterion is applied<br />

• For filters that support this option, what filter<br />

actions to perform<br />

Destination servers Destination servers are the inbound mail servers for<br />

the domain. These servers receive messages bound<br />

for the domain after they are processed by the Cloud<br />

Pre-Filter service.

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