AS8075 and strict uRPF contact

Hey folks - If there is anyone around from AS8075, please contact me off list. We have an unusual number of ISP partners asking us about a frightening email they received from Microsoft/Azure regarding strict uRPF filtering that will soon block traffic from certain sources, including some traffic that traverses or originates from our network. Even though we "opted out" in the original email we received from AS8075 about strict uRPF for our prefixes, it looks like the message needs reiterated or clarification. Thanks, -- Bryton Herdes Principal Network Engineer AS13335 - Cloudflare