Encryption exception

This rule triggers when IMSVA cannot decrypt or encrypt messages using an Identity-Based Encryption (IBE) algorithm.

Unable to decrypt messages

This rule is used to detect messages encrypted by Pretty Good Privacy (PGP) encryption or Secure/Multipurpose Internet Mail Extensions (S/MIME) encryption.

IMSVA can decrypt messages encrypted by IBE. However, you must first register a domain to the Trend Micro Email Encryption Server before IMSVA is able to decrypt messages from that domain.