Forum Discussion
spetrova1
Oct 17, 2025Copper Contributor
Policy for limiting external domains and allowing particular external receivers
Hi community, According to the guide https://learn.microsoft.com/en-us/defender-office-365/outbound-spam-policies-external-email-forwarding i have created the following rule for our test domain:...
Schnittlauch
Oct 23, 2025Iron Contributor
Hi Sofia,
I'm having a understanding issue what your goal is and what you'd like to achieve. Could you update your post to a more structured description?
I understood: You want to forward all emails which are sent to "email address removed for privacy reasons" to "email address removed for privacy reasons" but only from specific domains?
Why dont you enable full-forwarding for Mailbox1 and just create a transport rule which applies for Mailbox1 to reject respective domains?
BR Schnittlauch