My Mails are receiving in Spam Folder

Login to the cpanel of your domain by yourdomainname/cpanel

1. Click on spam assassin option under mail,
2. Enable spam Assassin
3. Enable Spam Box,
4. Click on Configure SpamAssassin
5. To allow all the mails from a particular domain , give *@domainname.com [ex. *@gmail.com ] in Whitelist_from option.
6. Click on Save .