Sendmail is not working on my LEMP 16.04
I'm setting up "sendmail" to send emails from my wordpress sites. I want to be able to use PHP mailer. I have tried every tutorial on the net to find and fix the problem. I keep getting "Connection refused by [127.0.0.1]" every time I test it. I have tried disabling the firewall and still did not work.
Tutorials that I tried but did not work:
Rest of the tutorials or questions do not have answers at all.