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problem with recieve connector RRS feed

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    Hello there..

    We have a problem with an application that gets mails outside from the domain... it SOMETIMES shows the error "Mailbox Unavailable. The server response was: 5.7.54 SMTP; Unable to relay recipient in non-accepted domain".

    I checked the recieve connector configuration on all the servers and it looks the same on all of them.

    on the security tab:

    checked TLS, Externally secured

    Exchange servers, Anonymous users.

    used to work fine and suddenly making problems

    Monday, May 6, 2019 12:36 PM

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    Hi,

    Please run the following cmdlet and provide all the configuration settings of the connector to us:

    Get-ReceiveConnector -Identity "Receive Connector Name" | Format-List

    Since it used to work fine, you may also try recreating the connector and then see whether the issue persists.

    Regards,
    Steve Fan

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    • Proposed as answer by Steve Fan Friday, May 10, 2019 10:22 AM
    Tuesday, May 7, 2019 3:22 AM
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    Just wanted to say hi and check if there is anything that we can do for you on this problem. If so, please do not hesitate to let us know and we will be happy to help.

    Best regards,
    Steve Fan 

    Please remember to mark the replies as answers if they helped. If you have feedback for TechNet Subscriber Support, contact tnsf@microsoft.com.


    Click here to learn more. Visit the dedicated forum to share, explore and talk to experts about Microsoft Teams.

    Friday, May 10, 2019 10:22 AM