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Vermont1981
Asked: 2020-04-15 09:39:25 +0800 CST

exchange 2013 distribution list - allow all external, but only some internal

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Is there a way to restrict an exchange distribution list email address to Allow All external, but only "A", "B", and "C" internal?

windows exchange-2013

1 Answers

  1. To allow all external messages and several internal senders, you could check the "Senders inside and outside of my organization" in the distribution group's "delivery management":

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    Then create a transport rule to reject the rest internal senders' messages(Condition: The recipient is a member of the distribution group and the sender is , action: Reject the message with the explanation(You could choose to delete the message without notifying anyone)): enter image description here enter image description here

    After that, the messages which are sent from the several internal users to the DL will be rejected, and these internal users will receive a undeliverable message if you reject messages with an explanation or enhanced status code.

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