troubleshooting Question

Disable Exchange 2016 Internal Relay

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David_zu asked on
ExchangeEmail ServersInternet / Email Software
9 Comments1 Solution2447 ViewsLast Modified:
Recently I setup an Exchange 2016 Server. Everything looks fine except the Exchange 2016 default Receive connector allows internal relay.

Eg: Two emails and in my domain An anonymous user can send emails to on behalf of (no authentication required). But if anonymous user try to send email to using, Exchange will refuse to send it.

May I know how could I do to restrict user authentication even for emails in the internal domain? I cannot disable the Anonymous users otherwise Exchange server will not receive any emails.
Neil Russell
Solution Development Specialist

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