I am hosting my site on name cheap and only email server is through mail in a box on a digital ocean server.
I am getting bounce back for some of the mails. I have checked my mail server settings and found out that SPF records are not properly set, maybe that’s why we are unable to send mail and our mails considered as spam. Here I am adding report link and a image of my setting for mail-in-box please take a look
Screenshot_2018-12-07 box ehsconsultantsgroup org - Mail-in-a-Box Control Panel.png1841x2590 343 KB
https://drive.google.com/file/d/1XWuUVooH6XRaef-qw01e3-K4l8y4Qkdd/view?usp=sharing