connector missing after running hybrid configuration wizrd

dirkdigs 921 Reputation points
2022-11-24T20:48:16.617+00:00

i have successfully migrated a test mailbox from Exchange 2010 to ExO (using remote move)
but when i look under connectors i do not see anything
mail flow is also working on the moved mailbox
are we looking in the wrong location?
what am i missing here?
without a connector between my on-prem exchange server and ExO i would not have any mail flow and the migration would not have been successful? am i correct?

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Exchange Server Management
Exchange Server Management
Exchange Server: A family of Microsoft client/server messaging and collaboration software.Management: The act or process of organizing, handling, directing or controlling something.
7,350 questions
Microsoft Exchange Hybrid Management
Microsoft Exchange Hybrid Management
Microsoft Exchange: Microsoft messaging and collaboration software.Hybrid Management: Organizing, handling, directing or controlling hybrid deployments.
1,886 questions

3 answers

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  1. Amit Singh 4,846 Reputation points
    2022-11-25T11:25:52.277+00:00

    Moreover, if it still doesn't create connectors for you, in this case, please manually create the connectors for mail flow between Microsoft 365 and your Exchange server 2010. After that, please re-run the HCW to see if it makes any difference. For your reference https://learn.microsoft.com/en-us/exchange/mail-flow-best-practices/use-connectors-to-configure-mail-flow/set-up-connectors-to-route-mail. By the way, please double-check if you prepared the prerequisites of Exchange Hybrid before deploying. For your reference https://learn.microsoft.com/en-us/Exchange/hybrid-deployment-prerequisites.

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  2. dirkdigs 921 Reputation points
    2022-11-25T15:18:30.007+00:00

    @Amit Singh

    I'm confused. How would I have migrated / moved a mailbox from on-prem 2k10 to ExO if there was no connector? additionally, how would mail flow be working on this new mailbox thru the on-prem exchange server still holding the MX record for the domain. this tells me the connector exists. (Just not visible????)

    That being said i don't really want to spin up a 2016 exchange server if i don't have to.

    what about thru powersehll? is there any way to verify the connectors that way?

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  3. Andy David - MVP 141.6K Reputation points MVP
    2022-11-26T12:33:12.047+00:00

    Connectors are used for mail flow, not mailbox migration.
    The reason is still works regardless is because the hybrid connectors are used to ensure mail between on-prem and ExO is "trusted" and the internal Exchange headers arent removed.
    If you have no hybrid connectors, then mail will still flow from on-prem to Exo using an existing on-prem send connector to the internet and ExO will still accept the message.

    To check with powershell on the on-prem side, look for : 

     get-sendconnector

    on the Exo side:
    Get-InboundConnector

    and 

    Get-OutboundConnector

    Personally, I would re-run the Hybrid Wizard to see if they are created this time.

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