We have a fairly hosted domain in dreamhost on a shared server, but when a client makes a register in our bussines theme wordpress platform + finder does not send email registrations to the platform hotmail.com, outlook.com and outolook.com.br, first check with dreamhost the cause, then I go to other problems. our email is sending firstname.lastname@example.org as our ttaki.com.br domain, hosted on dreamhost, regurlamente and duly paid, and if possible we would like some indication of the problem or solution. Our platform grows and in the future we will be in a DS! Any idea?
Have you opened a ticket to ask if we can check your mail logs? If the mail really is being sent, Hotmail could be sending your stuff to spam