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How to Restrict or Block applications from Sending Emails outside the organization Domain

IT Engineer 260 Reputation points
2023-12-21T11:30:21.17+00:00

Hello,

We have requirement for restricting the applications to send email outside our domain. We have application relay where IPs are added for the applications and port 25 is allowed.

Is there any work around we can follow?

Thanks

Exchange | Exchange Server | Management
Exchange | Exchange Server | Management
The administration and maintenance of Microsoft Exchange Server to ensure secure, reliable, and efficient email and collaboration services across an organization.

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  1. IT Engineer 260 Reputation points
    2023-12-27T21:21:10.7766667+00:00

    Hello. Gotta work around for this thread. Since by default all relay applications can send emails to external recipients, so we added Transport rule to block emails from those applications IPs to send outside the organization.

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