How to Restrict Outbound Emails in Dynamics 365 to Specific Domains Only?

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Posted on by CU30101535-0

Hello everyone,

I’m looking for a way to globally restrict outbound emails in Microsoft Dynamics 365 so that, in our dev environment, they are only sent to specific domains. I want to block any email from being sent to recipients outside of these allowed domains, ideally through a rule or setting that would apply automatically across all customer journeys and marketing campaigns.

I’m aware that I can filter audiences with segments within individual Real Time journeys, but I’m looking for a global-level configuration to avoid needing to customize each journey individually. Does Dynamics 365 offer a built-in allowlist or email restriction feature that can be applied across the entire environment? Or would this require an external integration or customization?

Thanks in advance for any insights or recommendations!

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Vahid Ghafarpour 11,995 Super User 2025 Season 2 on at

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How to Restrict Outbound Emails in Dynamics 365 to Specific Domains Only?

I hope this trick can help you

https://www.codetwo.com/admins-blog/how-to-prevent-office-365-users-from-sending-emails-outside-organization/

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CU30101535-0 2 on at

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How to Restrict Outbound Emails in Dynamics 365 to Specific Domains Only?

Thanks for your answer. Unfortunately we have not connected Exchange with Dynamics, so that trick is not applicable in our case.

Is there not any other alternative?

Thanks again

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