awscreative on "[Plugin: Ninja Forms] Administrator emails not being received"

I am having the same kind of issue. My basic NINJA form is not sending the mail.
I am hosting on LiquidWeb Storm Server VPS and our mail is based on EXIM / mail que os normal, all sites seem to have no errors on mail. but my one NINJA install WILL NOT SEND MAIL.

I am using the admin mail that the wordpress admin uses.
But it will not send mail.

http://thepregnancytest.com/wp/pregnancy-probability-calculator/

Ken Freeman