Microsoft O365 labels nanog potential fraud?

Is anyone else getting this message on every nanog post today? "This sender failed our fraud detection checks and may not be who they appear to be. Learn about spoofing at http://aka.ms/LearnAboutSpoofing<http://aka.ms/LearnAboutSpoofing]>" I don't know if this link itself is malware, as it goes to the MS store, or if something is broken in the Nanog Mail machine. If it's just me, never mind. I'll figure it out. -mel beckman