Microsoft Exchange Hybrid Transport routing example

(Below is example transport routing from Microsoft document. Check this link for Full MS Exchange Hybrid)

Route mail through the Exchange Online organization for both on-premises and Exchange Online organizations with centralized mail transport disabled (default configuration)

To check if centralized mail transport is disabled:
– First make sure PowerShell ExchangeOnlineManagement module installed
– To install the module: Install-Module -Name ExchangeOnlineManagement
– Connect to ExchangeOnline: Connect-ExchangeOnline
– Microsoft sign-in pop up ask for credential, one login successful will be able to run below PowerShell cmdlet to verify centralize mail transport is disabled

Get-OutboundConnector | select *

RouteAllMessagesViaOnPremises: False, meaning centralize mail transport is disabled

Outbound messages to the Internet

Messages sent from on-premises recipients are always sent to directly to Internet recipients using DNS regardless of which of the above choices you select in the Hybrid Configuration wizard.

Mail from Exchange Online senders routed directly to the Internet with centralized mail transport disabled (default configuration)