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email-analysis tls delivery

  • Published on Aug 4, 2026
  • 1 minute(s) read
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Configures the transport layer security (TLS) default delivery mode options to provide communications over a computer network. For details about TLS, refer to the Email Security — Server User Guide.

Syntax

email-analysis tls delivery {none | opportunistic | mandatory | verify}

Parameters

  • none

    When enabled in default delivery mode, no connections are configured with TLS

  • opportunistic

    When enabled in default delivery mode, emails are delivered over connections that are either TLS-encrypted or not TLS-encrypted.

  • mandatory

    When enabled in default delivery mode, TLS configuration is required for all connections.

  • verify

    When enabled in default delivery mode, validation of the next-hop message transfer agent (MTA) server certificate is required before the TLS connection is established.

Examples

The following example shows how to configure the TLS default delivery mode to none.

hostname (config) # email-analysis tls delivery none

The following example shows how to configure the TLS default delivery mode to opportunistic.

hostname (config) # email-analysis tls delivery opportunistic

The following example shows how to configure the TLS default delivery mode to mandatory.

hostname (config) # email-analysis tls delivery mandatory

The following example shows how to configure the TLS default delivery mode to verify.

hostname (config) # email-analysis tls delivery verify

User role

Admin or Operator

Command mode

Config

Supported appliances

This command is supported on the following appliances running the specified releases or later:

  • Email Security — Server: Before Release 7.5

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