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If 2016 mailbox servers have licenses, it is enough that you purchased one Exchange 2019 Standard license. That's all.
Exchange CAL License for Edge Transport Server 2019
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Marcus Wong Theen Nam
1,146
Reputation points
My existing infra have Exchange 2016 mailbox servers, we do have Exchange 2016 Enterprise license and User CAL for Exchange 2016.
Recently we installed one Exchange 2019 Edge Transport Server into the environment and subscribed the edge subscription to our 2016 mailbox servers. We have purchased Exchange 2019 Standard license for the server but would like to know if we need to have User CAL License for Exchange 2019 as well just for Edge Transport Server usage?
Exchange | Exchange Server | Management
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Jame Xu-MSFT 4,191 Reputation points2022-07-25T09:00:04.727+00:00 Hi, I'm here to confirm with you if your issue has been resolved. If the problem is successfully solved, you can share your solution and mark them or the helpful reply as answer, this will make answer searching in the forum easier and be beneficial to other community members as well.
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Jame Xu-MSFT 4,191 Reputation points
2022-08-01T07:22:22.983+00:00 Hi,
Do you have any further issue on this topic?
Meanwhile, if there is no issue, please remember to mark helpful reply as answer to close the thread. Your action would be helpful to other users who encounter the same issue and read this thread.
Thanks for your understanding.
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Accepted answer
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T. Kujala 8,766 Reputation points2022-07-18T07:26:08.077+00:00 -
Marcus Wong Theen Nam 1,146 Reputation points
2022-07-18T07:36:26.467+00:00 Meaning that Exchange 2016 User Cals will be sufficient for Exchange Edge Transport 2019 server? From the URL you attached I don't see any information stated if we already have 2016 Exchange user cals in place then we do not need 2019 Exchange user cals.
Appreciate if you could explain this further.
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T. Kujala 8,766 Reputation points
2022-07-18T11:19:08.953+00:00 Meaning that Exchange 2016 User Cals will be sufficient for Exchange Edge Transport 2019 server? From the URL you attached I don't see any information stated if we already have 2016 Exchange user cals in place then we do not need 2019 Exchange user cals.
Each Exchange client that can use the mail server must have a Client Access License (CAL). You can purchase licenses “per user” (Exchange Server User CAL) or “per device” (Exchange Server Device CAL).
You are using a user based CALs and I think that is enough now.
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Jame Xu-MSFT 4,191 Reputation points
2022-07-19T02:50:42.133+00:00 Hi @Marcus Wong Theen Nam ,
As @T. Kujala said, you have purchased Exchange 2019 Standard license for the server and have 2016 Exchange user CALs, that is enough.
For more information about CALs you can refer to the link:
https://www.microsoft.com/en-us/licensing/product-licensing/client-access-license
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