How Email Reputation Technology Works Parent topic

Trend Micro Email reputation technology is a Domain Name Service (DNS) query-based service. The following process takes place after IMSVA receives a connection request from a sending mail server:
  1. IMSVA records the IP address of the computer requesting the connection.
  2. IMSVA forwards the IP address to the Trend Micro Email reputation DNS servers and queries the Reputation Database. If the IP address had already been reported as a source of spam, a record of the address will already exist in the database at the time of the query.
  3. If a record exists, Email reputation instructs IMSVA to permanently or temporarily block the connection request. The decision to block the request depends on the type of spam source, its history, current activity level, and other observed parameters.
The figure below illustrates how Email reputation works.
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How Email reputation works

For more information on the operation of Trend Micro Email reputation, visit https://ers.trendmicro.com/.