hybrid centralized mail flow not working

pavan kumar 371 Reputation points
2021-04-01T20:43:22.337+00:00

hi,

we have configured hybrid setup with the centralized mailflow. but the emails from o365 to internet are not routing from internal exchange servers. it is directly sending to internet without coming to on-prem exchange servers and failing.

Any ideas, how can i check where this is misconfigured.

Thanks
Pavan.

Microsoft Exchange Online Management
Microsoft Exchange Online Management
Microsoft Exchange Online: A Microsoft email and calendaring hosted service.Management: The act or process of organizing, handling, directing or controlling something.
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Exchange Server Management
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Microsoft Exchange Hybrid Management
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1,886 questions
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  1. KyleXu-MSFT 26,211 Reputation points
    2021-04-02T07:22:57.34+00:00

    @pavan kumar

    Try to remove all connectors in Exchange online and send connectors on Exchange on-premises, then rerun HCW to recreate connector. After that, check whether mail flow become correct.

    If it doesn't working, I would confirm with you that: Whether there exist third party mail filter tool in your organization? If there are, try to remove them and test again. (There cannot exist mail filter tool between Exchange online and Exchange on-premises)

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