Hello,
I've tried every possible way.. SMTP Plugin even. But, Email not sending after registration to my members email. (WP) I'm using Ultimate Members wp plugin for membership site. Moreover, I'm using cloudflare.
Cloudflare Settings:
http://prntscr.com/pbsr04
I've installed: wo stack install
And 'sendmail' already installed. What to do? Even forgot password not working. Actually no email sending from my wp 🙁