Sending Email to Yahoo recipients

Every time I send a email to a yahoo recipient, it get’s placed in the users bulk mail. Is there anyway of fixing this on my side? The domain the mail is originating from is ffmgi-li.com. Any help would be appreciated.

Subject: Sending Email to Yahoo recipients

Do you have a reverse DNS entry for your mail server on the internet? This is the most common reason for mail to be handled that way.

Shawn