Hi,
Any special error or NDR returns?
Does message stuck in Outbox or others?
To troubleshooting your issue, please check:
1. Ensure all Exchange services are running well.
2. Ensure all server components are running well, run below command to check:
Get-ServerComponentstate -Identity “servername”
If the state is Inactive, please run below command to active relevant component:
Set-ServerComponentState <Identity> -Component “component name” -Requester HealthAPI -State Active
Best Regards,
Allen Wang
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