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The front-end Microsoft Exchange Transport service stops and does not restart in Exchange Server 2013 SP1 or Exchange Server 2016
Content provided by Microsoft
Applies to: Exchange Server 2013 Enterprise, Exchange Server 2016 Enterprise Edition
Consider the following scenario:
You upgrade to Microsoft Exchange Server 2013 Service Pack 1 (SP1) or upgrade a Microsoft Exchange Server 2016 server.
The Exchange server has both back-end and front-end roles.
You run the front-end Microsoft Exchange Transport service on the server.
In this scenario, the service stops and does not restart. Additionally, the following events are logged in the Application log:
Note If you stop the Microsoft Exchange Transport service, you can to start the front-end Microsoft Exchange Transport service. Then, when you try to start the Microsoft Exchange Transport service, that service does not start, and the events that are mentioned earlier in this section are logged.
This issue occurs if there is a receive connector of Transport type HubTransport that has the binding set to port 25 on the affected Exchange server. Only the FrontendTransport server-type receive connector should have the binding set to port 25.
Run the following command to change the connector type from HubTransport to FrontendTransport: