What should you do?

You deploy a new Microsoft Exchange Server 2019 organization named contoso.com.

You send a test email message to the organization by using an external account and you receive the following delivery report.

You need to ensure that the organization can receive email from external users.

What should you do?
A . Create an accepted domain for Litware.com.
B . Enable anonymous authentication for the client fronted Receive connector.
C . Enable anonymous authentication for the default fronted Receive connector.
D . Create a remote domain for Litware.com.

View Answer

Answer: C

Explanation:

References:

https://exchangetechexperts.in/2019/07/04/530-5-7-1-client-was-not-authenticated-error-message-from­exchange/