SInce few weeks Microsoft, which is managing services such as hotmal, live.com and outlook.com by default, throws all incoming email originating from disroot.org into Junk forlders. We are in contact with Microsoft about it, but so far we have not recieved a clear answer as to what is the reason for their actions.
We know we are not the only ones and Microsoft's practices are known and affecting more email servers out there (eg. https://github.com/MicrosoftDocs/OfficeDocs-o365seccomp/issues/442 ). We do hope this will be resolved soon.
