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unable send and receive externally RRS feed

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    Hi dear expert

    I'm new to exchange 2016 

    we install fresh install exchange 2016 with exchange edge server .

    we can send and receive mail internally but not externally.

    *we done subscription exchange edge server successfully  

    *telnet to port 25 is ok 

    when send mail from gmail to our exchange 2016 its return "550 5.7.54 smtp unable to relay recipent in non -accepted domain"

    *still we doesn't install valid certificate for exchange server

    please give me hand to fix our issue step by step


    • Edited by raminsr Tuesday, May 19, 2020 5:09 PM
    Tuesday, May 19, 2020 5:08 PM

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    Hi raminsr,

    Receiving:

    The error  "550 5.7.54" indicates that the receive connector does not allow an anonymous or unauthenticated sender to relay to external address.

    Are you using the Edge server to receive inbound messages? You should verify which receive connector reject the inbound message and run the following command for it to assign the permission:

    Get-ReceiveConnector name1 | Add-ADPermission -User "NT Authority\ANONYMOUS LOGON" -ExtendedRights "Ms-Exch-SMTP-Accept-Any-Recipient"

    Sending:

    When the subscription is done, it creates a Send connector named EdgeSync - <Site Name> to Internet that's configured to relay messages from the Exchange organization to the Internet.

    Did you get any NDR when sending fails? Or was the message stuck in Outbox? 

    Please search the message traching log for more information:

    Get-MessageTrackingLog -ResultSize Unlimited -Start "3/28/2015 8:00AM" -End "3/28/2015 5:00PM"  -Sender "pat@contoso.com"|fl

    Regards,

    Eric Yin

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

    Wednesday, May 20, 2020 7:22 AM
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    Hi, I'm here to confirm with you if your issue has been resolved. If the problem is successfully solved, you can share your solution and mark them or the helpful reply as answer, this will make answer searching in the forum easier and be beneficial to other community members as well.

    Regards,

    Eric Yin

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

    Tuesday, May 26, 2020 6:08 AM