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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 />

Scanning POP3 Messages<br />

12-2<br />

In addition to SMTP traffic, IMSVA can scan POP3 messages at the gateway as clients<br />

in your network retrieve them. Even if your company does not use POP3 email, your<br />

employees might access their personal POP3 email accounts using mail clients on their<br />

computers. Hotmail® or Yahoo!® accounts are some examples of POP3 email<br />

accounts. This can create points of vulnerability on your network if the messages from<br />

those accounts are not scanned.<br />

Understanding POP3 Scanning<br />

The IMSVA POP3 scanner acts as a proxy server (positioned between mail clients and<br />

POP3 servers) to scan messages as the clients retrieve them.<br />

FIGURE 12-1. Scanning POP3 messages<br />

To scan POP3 traffic, configure your email clients to connect to the IMSVA server<br />

POP3 proxy, which connects to POP3 servers to retrieve and scan messages.<br />

You can set up the following connection types:<br />

• Generic: Allows you to access different POP3 servers using the same port, typically<br />

110, the default port for POP3 traffic.

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