Exclude several domain controller for Exchange 2019 servers

Question

Hello.
Is that possible to exclude to use several dc, that we used on remote branch?

Priority in srv records is not set, so all dc's are equal, but when one of exch server choose remote branch dc, he cannot process that much of work.

Only thing, that i found, is use StaticExcludedDomainControllers in Set-ExchangeServer.

Is that normal practice? Why exchange start of use such a remote dc?

Answer 1

Exchange will use any valid DC it can. It prefers in-site to out of site DCs however.

If you look at even 2080 on the server, you will see how it determines the suitability of the DCs:
https://learn.microsoft.com/en-us/exchange/troubleshoot/administration/msexchangedsaccess-event-id-2080

However, if you want, you can exclude ( or include) the Domain Controllers it uses. I wouldnt say its a normal practice, but you can certainly do this and its supported

Answer 2

Hi @Roman Havryliuk

Yes, you could use the command to exclude DC.

set-exchangeserver exchangesrv1.domain.com -StaticExcludedDomainControllers OldDc1,OldDC2  

And the command below to determine which domain controller is used

Get-ExchangeServer -Status | FL name,StaticDomain*,CurrentDomain*,Static*  

Details: Set-ExchangeServer

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