How Do I Safelist a Domain That I Am Testing (Office 365)?
Go to security.microsoft.com and login to your account. Be advised that administrator permissions will be required.
In the left-hand menu click on Threat Management, then select Policy from the drop-down.
On the Threat Policies page, under the Rules heading, select Advanced Delivery.
On the Advanced Delivery page you will see two tabs, the Spec Ops tab and the Phishing Simulation tab. Click on Phishing Simulation.
On the Phishing Simulation page beneath the heading, select Edit.
In the side window titled Edit third party phishing simulations, click on the domain dropdown. Add your domain in the field that is provided. The domain(s) you add here will be the phishing domain(s) you use in your templates. You may add up to 20 domains.
Once all domains are entered, select the Sending IP dropdown. In the field that appears, enter 184.108.40.206 (US) or 220.127.116.11(EU).
Then click Save.
NOTE: If Office 365 is not your mail solution, please refer to the Safelisting section of our user guide.