Message goes to spam when received by office 365 email

I am sending a message from Axigen to an 0ffice 365 email. When i receive the message in Office 365 it goes to spam. The message only contains one word. Here I will list the headers of the message. Please let me know of any hints of why this maybe recognized as a spam by Microsoft. I have replaced my real domain name with mydomain in this post.


As a new user I couldn’t paste the headers here so I provide a link to them:

One of the best tools to determine the problem is
Check and upload the result for further investigation.

Thanks that was useful