Hotmail/Live/Outlook - https://support.microsoft.com/en-us/getsupport?oaspworkflow=start_1.0.0.0&wfname=capsub&productkey=edfsmsbl3&ccsid=636384055665373784
Office365 - https://sender.office.com/
Generic Blacklist Lookup - https://mxtoolbox.com/blacklists.aspx