As the first line of defense, Trend Micro Email Reputation Services helps stop more than 80% of spam before it can flood your network, overload email gateway security, and burden your system resources.
When your email server accepts an initial connection from another email server, your email server records the IP address of the computer requesting the connection. Your email server then queries its DNS server, which in turn queries the Trend Micro reputation databases to determine if there is a record for the IP address of the requesting computer.
If the host is listed in a database, Email Reputation Services recommends an appropriate action. You can also customize actions.
Trend Micro offers two levels of Email Reputation Services service: Standard and Advanced.