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Notifications are not sent to distribution groups

If you specify a user's e-mail address as a recipient, notifications work. If you specify a distribution group as the recipient, notifications do not come through.

This is related to authentication settings.

By default, even if the Exchange receive connector accepts anonymous SMTP, sending to distribution groups requires clients to be authenticated.

http://technet.microsoft.com/en-us/library/bb629676%28v=exchg.80%29.aspx

There are two solutions:

  1. Configure SMTP authentication in the settings of the Netwrix Auditor management console

    ![SMTP authentication settings in Netwrix Auditor]./../0-images/ka04u000000HcSG_0EM700000005pJq.png)

  2. Disable the "require authentication" option in distribution group options as follows

    1. Launch Exchange Management Console

    2. Navigate to MS Exchange - Recipient configuration - Distribution groups

    3. Select the required distribution group and open its Properties

      ![User-added image]./../0-images/ka04u000000HcSG_0EM7000000054Pc.png)

    4. Go to Mail Flow Setting tab

    5. Select Message Delivery Restrictions from the list and open its Properties

      ![User-added image]./../0-images/ka04u000000HcSG_0EM7000000054Ph.png)

    6. Uncheck Require that all senders are authenticated and click OK

      ![User-added image]./../0-images/ka04u000000HcSG_0EM7000000054Pm.png)

    Alternatively, you can run the following command via Exchange Management Shell:

    Set-Mailbox -RequireSenderAuthenticationEnabled $false -Identity %group%,

    where %group% is like dynamic.group@example.com