You can also bring up the port by using these commands:
+ The "shutdown" interface configuration command followed by the "no shutdown" interface configuration command restarts the disabled port.
+ The "errdisable recovery cause ..." global configuration command enables the timer to automatically recover error-disabled state, and the "errdisable recovery interval interval" global configuration command specifies the time to recover error-disabled state.

Telemetry - Information and/or data that provides awareness and visibility into what is occurring on the network at any given time from networking devices, appliances, applications or servers in which the core function of the device is not to generate security alerts designed to detect unwanted or malicious activity from computer networks.

SSL Decryption is an important part of the Umbrella Intelligent Proxy. he feature allows the Intelligent Proxy to go beyond simply inspecting normal URLs and actually proxy and inspect traffic that's sent over HTTPS. The SSL Decryption feature does require the root certificate be installed.

Cisco Email Security Appliance (ESA) protects the email infrastructure and employees who use email at work by filtering unsolicited and malicious email before it reaches the user. Cisco ESA easily integrates into existing email infrastructures with a high degree of flexibility. It does this by acting as a Mail Transfer Agent (MTA) within the email-delivery chain. Another name for an MTA is a mail relay.
Reference:
Cisco_SBA_BN_EmailSecurityUsingCiscoESADeploymentGuide-Feb2013.pdf