Limited Internet Access - Only allow outlook to receive and send emails

[Vipul]

I created a Layer 3 rule to block all WAN networks, but I need to allow access to Outlook to send and receive emails. How can I make a limited exception?

Current Layer 3 Rule

[ww · Accepted solution]

Try add these as allow rules https://learn.microsoft.com/en-us/microsoft-365/enterprise/urls-and-ip-address-ranges?view=o365-worl...

[Vipul]

Thank you for reply. It works.

[Vipul]

HI there, 

I am having problem again. I have created below policy and it was working fine. after few days stop working.

I appreciate your support in advance.