Forum Discussion
O365 Exchange sender domains restriction
Hello, I have problem how to setup restriction on Exchange online : " no e-mail from an unauthorized domain is allowed". I tried it setup in Rules , but I dont see any possibility for these kind od...
What's an "unauthorized domain" though? You can configure domain-based whitelist/blocklist as detailed here: https://docs.microsoft.com/en-us/microsoft-365/security/office-365-security/configure-your-spam-filter-policies?view=o365-worldwide
Hello Vasil, "unauthorized" means for example: only emails from domains MyCompany1.xx and MyCompany2.xx are allowed as senders to my Exchange.
I tried setup allowed domains in anti-spam inbound policy , but this policy is focused to skip alowed domains from anti spam procedures.
I tried setup allowed domains in anti-spam inbound policy , but this policy is focused to skip alowed domains from anti spam procedures.
- If the idea is to only allow messages from specific domains, best use Mail flow rules, where you can add those domains as "exceptions".
- YES, Thank you very much Vasil, sometimes the things are simple ...
Good luck