Email analysis verification mode (Email security only)
For compliance on Email Security — Server, all email delivery uses TLS encryption with verification mode. Verification mode requires validation of the next-hop MTA server certificate and the imported certificate authority (CA) before the TLS connection is established.
Standards
FIPS 140-3, CC-NDcPP
CLI configuration commands
To restore opportunistic mode for delivery:
compliance options email-mta-tls-opportunistic
Show commands
show email-analysis