This service helps block spam by validating requested IP addresses against the Trend Micro reputation database, powered by the Trend Micro Smart Protection Network.
This ever-expanding database contains over 1 billion IP addresses with reputation ratings based on spamming activity. Trend Micro spam investigators continuously review and update these ratings to ensure accuracy.
Email Reputation Services Standard Service is a DNS single-query-based service. Your designated email server makes a DNS query to the standard reputation database server when receiving an email message from an unknown host. If the host appears in the standard reputation database, Email Reputation Services reports that email message as spam. You can set up your Message Transfer Agent (MTA) to take the appropriate action on that message based on the Email Reputation Services results.
Trend Micro recommends that you configure your MTA to block an email message from an IP address that is on the standard reputation database.