understand_email_encryption
Trend Micro Email Encryption encrypts email messages using Indentity-Based Encryption (IBE). For example, user1@a.com sends an email message with private information to user2@b.com. The domain a.com is registered with IMSVA for encryption and decryption. A policy rule enables outgoing email messages containing private information to be encrypted. IMSVA encrypts the email message sent to this user2@b.com.
IMSVA Email Encryption
Before using Trend Micro Email Encryption, Trend Micro recommends that an NTP server is used with IMSVA. This ensures standard time and date data for IMSVA.
Using Trend Micro Email Encryption requires following these steps:
Register IMSVA to the encryption service (See Registering for Email Encryption on page 7-3)
Register domains to the encryption service (See Registering Domains on page 7-5)
Configure policies to encrypt your email messages (See Adding Policies on page 16-2)