Why should you use a Mail Transfer Agent when configuring Prevent/Hold-mode?

1. TE inspection in streaming mode can cause the sending mail server not to send any additional emails until the emulation of the prior email is completed.

2. TE inspection in Mail Transfer Agent mode will accept all valid incoming emails before inspection.

3. It will allow the email to reach the user while at the same time be sent for Dynamic Analysis.

4. There is no Mail Transfer Agent mode for Threat Emulation, only for Anti-Spam.