"Openwave uses a technology called Razorgate to help prevent spoofed emails and other forms of abuse on their platform, according to their website. Razorgate analyzes emails at multiple layers, from IP addresses and SMTP to content signatures, and uses a policy engine to detect and filter suspicious messages. " .... is what is says online
In the real real, here is a screenshot of one of many messages of me getting spoofed and Openwave's infra is what is being used to do it.
That AI stuff is so bad ass /s