All Ports that Messaging Gateway uses - Broadcom Inc.
https://knowledge.broadcom.com/external/article/178775/all-ports-that-messaging-gateway-uses.html
Jun 05, 2019 · Web management port for the Control Center. 8443. TCP. SPC host. Control Center. SPC management interface (HTTPS) To integrate Symantec Messaging Gateway with Symantec Protection Center, ensure that the Protection Center server (s) are able to communicate with all Symantec Messaging Gateway appliances over port 8443.
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