This HowTo video walks you through allow-listing CyberHoot’s Mail-Relay by either Domain Name or IP Addresses in Microsoft’s O365 environment. This process is very similar whether you use the domain names shown below or the IP addresses in O365.
CyberHoot’s Email-Relay IP Addresses
The required IP address and Domain name information is found in this HowTo article:
*If you are planning on sending Phishing Tests to your clients and prospects, you will need to have them allow-list all our email relays shown in the list.
Detailed Instructions From Microsoft:
Once you click the link above, follow the instructions under the “Use the Microsoft 365 Defender portal to configure third-party phishing simulations in the advanced delivery policy” heading.