Threat Prevention Mail Configuration

What can I do here?

In this window you can configure how Threat Prevention and Anti-Virus scan emails.

Getting Here - Security Policies > Threat Prevention > Policy > Threat Tools > Profiles > Profile > Anti-Virus > Protocol > Mail (SMTP) > Configure

Or:

Security Policies > Threat Prevention > Policy > Threat Tools > Profiles > Profile > Threat Emulation/Threat Extraction > General > Protocol > Mail (SMTP) > Configure

Threat Prevention and Anti-Virus Mail Configuration

Mime Nesting

Maximum MIME nesting is X levels - Set the maximum number of levels that will be scanned in a MIME email with nested contents. This controls how deeply into the nesting the ThreatSpect engine will scan.
When nesting level is exceeded block/allow file - If there are more MIME nested levels in an email than the maximum configured level, you can configure to block or allow the file.