In Exchange, you can throttle the number of connections that a HUB Transport Server can have open to a remote domain, the default value for the field “MaxPerDomainOutboundConnections” is 20.

To change the value, you can run a simple command from the Exchange Management Shell(EMS):

  • Set-TransportServer -Identity HUB1 -MaxPerDomainOutboundConnections 10
Exchange 2010:- limit the number of outbound connections from a hub server with powershell

Don’t forget to restart the transport service once done.

Hope it helps.


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