Using a private endpoint for Exchange Online Relay - GCC high

Rider, Justin 0 Reputation points
2024-07-02T15:28:37.45+00:00

We have an online only configuration in Azure GCC high. We have virtual compute.

We would like to setup an SMTP relay to be used for notifications as a trusted connection to exchange online.

I understand the documentation here: https://learn.microsoft.com/en-us/exchange/mail-flow-best-practices/use-connectors-to-configure-mail-flow/set-up-connectors-to-route-mail

My question:
Can I use a private connection as a connector in exchange online ? The goal is to not route the traffic publicly.

Note: It does not appear that Email SMTP support through Azure Communication Services is supported in GCC High tenant (https://learn.microsoft.com/en-us/azure/communication-services/concepts/email/email-smtp-overview)

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  1. Bruce Jing-MSFT 2,520 Reputation points Microsoft Vendor
    2024-07-03T05:37:32.46+00:00

    Hi,@Rider, Justin

    Thanks for posting your question in the Microsoft Q&A forum.

    According to your description, here are my suggestions:

    In Exchange Online, follow the documentation to set up a connector, but when configuring the connector, you need to use the private IP address or internal DNS name of your internal relay server instead of the public address.

     

    Regarding Azure question, it is separate from Exchange Online. In order to better solve your problem, I will add Azure tag to your problem.

    Best

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