Firewall ports required between domain controllers and Exchange servers

VB 6 Reputation points
2022-01-26T13:22:34.607+00:00

We have a situation in the environment, Domain controllers are hosted by a vendor and their data center and Exchange servers are hosted by a different vendor in their data center. We have a request from Exchange application team to open ANY to Any communication between domain controllers and Exchange servers. This request is being rejected by the Company Security and Firewall team. Can someone had this experience? and Can share the List of Firewall Ports required between DC and Exchange server communication?

Exchange Server Management
Exchange Server Management
Exchange Server: A family of Microsoft client/server messaging and collaboration software.Management: The act or process of organizing, handling, directing or controlling something.
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  1. Dave Patrick 426K Reputation points MVP
    2022-01-26T13:27:43.23+00:00
    0 comments No comments

  2. Andy David - MVP 140.8K Reputation points MVP
    2022-01-26T13:51:20.273+00:00

    Just to be clear, all ports must be open between Exch and the DCs to be supported:

    https://learn.microsoft.com/en-us/exchange/plan-and-deploy/deployment-ref/network-ports?view=exchserver-2019

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