This article explains why Digest Email does not send out notifications when it is enabled in the Hosted Email Security (HES) or Trend Micro Email Security (TMEMS) quarantine settings.
There are three (3) types of rules in HES/TMEMS - Inbound Filtering: the "S" rule for spam, "V" rule for virus and "C" rule for content. Digest Email only makes a list of emails triggered by an "S" rule, so only the policy triggered by this rule delivers a digest. This is because Trend Micro does not want anyone aside from the administrators to know or release anything that is not spam.
Below are sample scenarios:
- When the administrators have a rule to quarantine corporate content-sensitive messages, we do not want an end-user to see and to be able to release the message.
- When the administrators quarantine a virus, we do not want it to be released.
For more information, refer to this article: Frequently Asked Questions (FAQs) about HES and TMEMS Digest Email and End User Quarantine (EUQ) account.