Do Domain & IP whitelisting first. This is an addition to it,
not a replacement.
1
Open indicators
In the Microsoft Defender portal, go to System then Settings then Endpoints
then Indicators then URL/Domain, and click Add Item.
2
Add the domains
Enter the full domain list, one at a time.
3
Describe the indicator
Give it a title such as
OutKept phishing domain and a description such as
Domain used by OutKept simulations.4
Set the action
Select Allow.
5
Set the scope
Add it to All devices in my organisation, or a narrower scope that fits your setup.
Microsoft needs time to propagate this. Wait one to two hours before the policy takes
effect. Testing earlier looks like a failure that is really just a delay.
Then what
Have other security products enabled? Whitelist them now.
Once everything that applies to your environment is whitelisted, send a test email from the
platform and confirm every interaction is recorded. See
Testing your whitelisting.

