Enable your macOS devices to retrieve exchange email by configuring advanced settings.

Setting Description
Internal Exchange Host The name of the secure server for EAS use. This option and following appear when Native Mail Client is selected.
Port Enter the number of the port assigned for communication with the Internal Exchange Host.
Internal Server Path The location of the secure server for EAS use.
Use SSL For Internal Exchange Host .

Communicate with the Internal Exchange Host by enabling the Secure Socket Layer (SSL).

External Exchange Host . The name of the external server for EAS use.
Port Enter the number of the port assigned for communication with the External Exchange Host.
External Server Path The location of the external server for EAS use.
Use SSL For External Exchange Host .

Communicate with the External Exchange Host by enabling the Secure Socket Layer (SSL).