HowTo: Allow-List CyberHoot’s Mail-Relay IP Address – Mimecast
This article will walk you through setting up allow list in Mimecast. The required IP address and Domain name information is found in this HowTo article:
Detailed Instructions From Microsoft:https://learn.microsoft.com/en-us/microsoft-365/security/office-365-security/skip-filtering-phishing-simulations-sec-ops-mailboxes?view=o365-worldwideOnce 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. Detailed Instructions From CyberHoot:Allow-List by X-Header in M365Once you click the link above, make sure to follow all the…