How to write to yahoo.com about being spammed?

Question

Mail server

I have a domain, I created mail for it, I send it via php mail (I also tried the SMTP protocol) everything is fine everywhere, but yahoo throws it in spam. I talked with the hoster (adminVPS), they did something there, but it didn’t work. They said to write to them with this question, but maybe your community can help?
ps the mailbox cannot get into spam, because it was created recently.
ps but it only hits the yahoo.com service

Answer 1

Are DKIM, SPF configured correctly?